Johnson 175 compression test. Raise the engine’s temperature to operational level.

Johnson 175 compression test Spark check each plug 2000 Johnson 175 Compression I was wondering if anyone could tell me the compression range on a 2000 Johnson 175. The compression test is a diagnostic method of finding out if a cylinder is damaged and losing compression. Had the throttle all the way open and removed all 6 plugs. Jan 27, 2018 #1 May 13, 2009 · I'm looking at purchasing a boat that's in beautiful condition but I'm concerned about the compression numbers on the GT150. It's the 6 hp model. Engine seems to just run at a bog w … read more Table of Contents Johnson 175 Fast Strike Service Manual 1. The last time I ran it, which was quite a while ago, it turn off as well, I repump the bulb and it turn off. Today I notice that when I pump the bulb it was soft. Anything less means the motor is borderline in needing either a ring job or a re-built power head$$$. 45LBS? Look for 100lbs each cylinder and only a 10% variance between the cylinders. Is this a good reading, seems low to me. Showed 140 psi on all cylinders. I have a 2000 Johnson 50 HP 2-stroke outboard that is suffering from low compression on one of the cylinders. 1-83 2-76 3-85 4-76 5-85 6-75 These seem low to me and the odd thing is 1,3, and 5 are close as are Going to look at a boat tomorrow and was wondering is anyone knew what the spec was for compression on a 2000 Johnson 150. Port was 150, 145, 145 and 150. I took it to the Lake today and it would barely idle and run and it seemed like it was doing a sneezing sound then it would hardly plain out I got it up to 48 mph and Aug 6, 2019 · In the early 1970's, when you could still get good gasoline, outboard compression in the 180-190 psi range was common. 65, 70, 70, 70, 75 May 31, 2011 · Re: 1988 Johnson 175hp VRO if he only took it out a couple of times last season expect it to run like crap -use this as a bargaining tool tell him youll take it but that you know its gonna cost _____ to fix it and bla bla bla be smart about it, make up for the cost of carb kits, water pump kit , a couple extra coils and a power pack (spare Jul 1, 2003 · I have a 1979 Johnson 175 (after talking to mechanics it may be a 150). ----So if there is black filthy oil in there you have problems. Results: 100 - 105 PSI Jul 22, 2013 · Good afternoon. Jul 7, 2014 · The boat is an 87 glassport bass scalper 175. Jul 25, 2024 · On my last outing on the boat cruising along at 25 knots, the engine just shut off. I read some instructions about trying a "wet" compression Dec 29, 2012 · Made the following repairs: rebuilt carbs and set up to initial settings, replaced carb mounting gaskets, Checked valve clearance . The motor has sat outside for four years and was winterized the first year. I did a compression test and the numbers on the drivers side top to bottom are 110, 110, and 95. Joined Feb 22, 2008 Oct 6, 2018 · Knowing how to perform a compression test is essential if you are buying or maintaining any outboard motor. Jan 22, 2017 · Perform cylinder compression test. It just doesn't have the power it had before. This seems a little low to me, is this acceptable? The dealer claims the engine only has 71 hours on it. Results vary depending on whether the outboard is a Four-Stroke or a Two-Stroke. Tough to get into gear without dying. Mar 16, 2011 · Re: 1997 Johnson 175 Faststrike you need to check compression and spark on each cylinder. l said it would on Feb 25, 2021 · I ran a compression test with a lisle gauge. The piston heads look like they have carbon build up on them. May 6, 2013 · Why would a surveyor not be able to test a 4 stroke? Boat is a 24' off-shore boat. I see a 10-15psi difference I’ve just done a dry compression test on my stock 07 Mazdaspeed 3 with 106,600 original miles and here are my results Cylinder 1: 140, Cylinder 2: 135, Cylinder 3: 135, Cylinder 4: 145 This is my first time doing a compression test on this car and I am aware that the maximum psi is 185 but I wanted to know what you guys think about my results. ---Remove bypass covers and look at pistons / rings from the side. Once you have finished the compression test, you can compare your results to what the manufacturer recommends. Clean carbs and check the fuel pump diaphram. Does that mean a weak or bad spark. I'd be looking for around 105 lbs on each cylinder. Bottom 2 might be lower than top 4 and thats ok. power pack How To Compression Test an Outboard Motor {TIGHTEN UP TUESDAY}Welcome back to Tighten Up Tuesday! This is a straight up step by step instruction video of ho Jan 26, 2011 · So I did the compression test as outlined above I have only had this motor for about a month and havent had a chance to put it in the water as there is about 8" of ice standing between me and it I was just wondering if these #'s sound good or about average for a 1975 85HP Johnson V4 engine. This is the process. If I was in the market for it and it ran good, I'd buy it and decarb it, then decarb it once a year or every 100 hours for long life. So I got it home today and did a spark check and compression test. Home. also cold be that a float is out of adjustment. I have a 93 Johnson 175 fast strike I took it to a mechanic and he told me that it was only firing ontwo cylinders he said that the compression was good in the spark was good I change the power pack after he told me that was bad. Identifying Johnson 175 Fast Strike Service Manual Exploring Different Genres Considering Fiction vs. If they are ok. Sep 13, 2010 · Re: 1999 Evinrude Intruder 175 VRO I have a 1995 GL model 150 with 120 psi compression on all cylinders. If there was any real bad damage it wouldn't idle well. this is the first thing to be done in the process of figuring out your problem. Jul 19, 2016 · Make sure that it is running as it was prior to the compression test. When tested last September, cylinders were 145, 145, 140 and 150 starboard. Compression readings showed low compression on the starboard side of the engine 62, 58 & 58, port side were all in 2004 Johnson 175 checked compression - 90 lbs. Customer: I have a 2003 175hp Johnson outboard, I think it has low compression but now sure, I have no clue what the hours are on the motor, I’m buying it from a guy online, the compression reads 95psi95psi90 psi95 psi90 psi90 psiI know they are close to each other but I’m not sure if this is low overall? May 4, 2004 · Re: 1999 Johnson 175 To answer your questions. It’s very easy to perform, and basically involves inserting a threaded fitting attached to a hose and gauge into the spark plug's opening, then cranking the engine and reading the pressure on the gauge, measured in PSI (pounds per square inch). I recently bought a 1998 Javelin 389B with a Johnson 175 Fast Strike J175GLECD engine. I know 140 isnt that low as I've seen motors with 75 psi, but am wondering how itll stand with age. It appears to have the original power pack and the plug wires look worn. For such a new and lightly used engine should the compression be The first thing that most people think of when they hear the words, "compression test," is expensive. I would double check with another guage. A "compression test" is the pressure that the piston can push. Jan 7, 2011 · Was wondering if anyone could tell me a good compression reading for a 1996 Evinrude 150 XP. it sat in the garage close to a year, then I moved it to the backyard to start getting it ready to mount on my project boat. Apr 8, 2003 · I am contemplating buying a boat with a 2000 Johnson 175 on it. Inspect engine and repair as needed. The engine needs a complete rebuild, which I can have done for $2200. You will also find on this site the info needed to make your own DVA adapter. So I don't doubt its accuracy. . Jun 6, 2019 · To start with , my engine seems to run fine, getting ready to drop in, but I had time so I did a compression test. I have a 97 Johnson 175 Fast Strike. We did install new plugs, and fixed up the leaking carb bowls. Before I sold that boat and upgraded new, i think my compression numbers were all between May 30, 2014 · Takes more time than simple compression test, most customers don't want to pay the costs. <br /><br />However, it did not need to cool and it started back up immediately. Long time lurker here. L. Doesn't idle as good as an injected motor. Jan 29, 2015 · This is why the dyno is so helpful when working on running issues on a motor. Compression, fuel pressure, and vacuum gauges can come from Sears. Mar 9, 2014 · DOWNLOAD MANUAL http://www. The first step is to warm up the engine until it is ready to run like normal. Mar 14, 2011 · Maybe do a compression test. I don't think he has a manual and there is one online for about 40 bucks, but I wanted to know just to test the compression before i make a decision about purchase. Apr 15, 2011 · I have a 2000 johnson 175, J175VLSSS. I changed plugs last weekend. But it dosent seem to change. The alarm seems to work opposite of the way it should. I have a new starter on order but I went to get a compression test and it tested low (70 psi on all cylinders) Nov 29, 2011 · Re: 2003 Johnson 175 - Misfire and low compression SEE PIC The o rings are between the engine block and the block cover. I will run to the auto store today and get the tool, then report back with my findings. How to perform a basic compression test on any outboard motor, also a description of tools needed Johnson 15 compression test issue. The dealer did a compression test, 90lbs on all six. Pre sale compresssion test 30 July 2017 (See test results below)Cold Engine / non runnerCompressions PsiLEFT/PORTTop 85Middle 80Bottom 75RIGH Feb 3, 2007 · About a month ago I did a compression test on a 1985 185hp Evinrude and it had compression of 80-85. Mar 4, 2010 · the 6 cylinder do have lower compression than the 2,3 and 4 cylinders. Aug 12, 2010 · Guys I am looking at buying a 1996 blazer boat with a 1996 150 H. When on plane it maxed out at 5,000 rpms and 55 mph GPS. Johnson also boasted that the computer-controlled machining of the combustion chambers increased performance and provided more consistent power, that the fully-machined cylinder sleeves improved acceleration and fuel economy, that the self-flushing thermostat assured constant idle temperatures and Aug 13, 2011 · Re: Johnson 235 block with 175 carbs It's probable that the 78 235 had the large 1 3/8" throated carbs on it from the factory. The dealer that I bought it from did a compression test on the motor and all cylinders were from 110-115 except for one which was between 95-100. Can you do another compression test,backwards ? I mean start with #6 and #5 etc. this will tell you if you have a stuck needle valve causing flooding,,. I just completed a compression test and the results are 1- 104, 2- 105, 3- 105, 4- 104, 5- 102, 6- 95. There may be several reasons for the numbers but it's a good sign that each side is even although a little on the low side. Jul 17, 2019 · Step by Step Instructions on how to correctly do an Outboard Compression Test on any outboard engine. Thread starter Jupiter Dinghy; Start date Jan 27, 2018; Jupiter Dinghy Regular Contributor. I'm not familiar with Johnson's specs and I've heard that some of these motors run lower compression numbers than others. Jul 10, 2009 · A low compression engine has nothing to do with the compression test. I've run 3 different props. i. was 110 and the bottom was 105 i was reading in my book that there could be a differents between left and right bank does this sound bad and should i pull head on left bank to check inside ?? Mar 19, 2014 · Re: No spark 1997 johnson 175 Yep, you can test that there is no continuity to ground on the kill circuit when key is on, sounds like thats whats happening. ? Sometimes the battery isn't up to snuff at the end of a compression test,and that's a shame if you condemn an engine falsely. Have you got the throttle wide open . com/select-outboard-engine-brand. I have been told that some Johnson come from the factory with compression at Mar 18, 2011 · Re: 1998 Johnson 175 hp Fast Strike I wasn't able to locate a spark tester, but when i pulled the plug and turned the ignition, i did see the spark jump the gap. The best top speed ive ever gotten was 47. Jul 24, 2024 · On my last outing on the boat cruising along at 25 knots, the engine just shut off. Follow the instructions that come with the kit to attach the compression tester to the adapter. Thanks in advance for any replies. . on the left side the top cyl. I would sit down, have a cig if you smoke, and a cold beer if you drink. The 1979 115HP weighs 288 Pounds with manual tilt or 301 lbs with PT&T. My last johnson 115 was a 1974 and all pots were 120 psi cold. Also take the lanyard cable off to stop the ignition from sparking. When I talked this over with the local Johnson/Evinrude dealer he told me I should hope to see at least compression of 100. 002 on all cold, checked point gap ok. From what I understand the 150 GL has the 175 higher compression heads and is supposed to produce 165 HP. For reference, I had a 175 johnson faststrike v6 /w 25p ss prop and hit 58-60 at 5600 RPM on a 19' ranger. Compression readings showed low compression on the starboard side of the engine 62, 58 & 58, port side were all in the 90s. Any pros or cons on this motor?Thanks in advance Apr 16, 2007 · 2003 Johnson 175 Mine did that from the get-go. Feb 28, 2004 · About the motor:It is a used 1975 Johnson 115HP (V)Outboard. Feb 4, 2007 · Re: 1997 Johnson 175 Fast Strike The 88 and 90 is a bit concerting. 5x24 Raker 3 blade. Jul 4, 2019 · Normally, it's been my experience that on the late model engines of my time (retired in 1991) in the new V$/V6/V8 class, the compression would be 90 psi on the starboard bank and 95 psi on the port bank due to the engine design Cylinder compression test of a low hour Johnson Evinrude 25 Hp Outboard Boat MotorAn outboard has good compression if the values are above (roughly) 70 psi a May 8, 2024 · Here's the back story: Last summer, we messed up our Evinrude 150 on our 1997 Stratos 295 Pro Elite boat. I tested engine cold. html"primary compression" two stroke engine "what is the compression on a losing compre Jan 21, 2009 · 1994 150 Johnson Fast Strike Compression (test drive not good!!) The boat is in great shape and I know the previous owner and he never had any problems with it. The engine cover (terribly Step 4. Jul 9, 2013 · I have 2 engines on my boat and i decided to take the 1975 Johnson 6RL75R. Maybe a decarb once reassembled. Then I pickled it and she sat for four years. Guys If I plug the outlet fuel line from the bottom of the VST that feeds the lower inlet nipple of the VRO, then removing the main fuel line from the filter inlet at the VST, and re-connect the main fuel line to the lower inlet nipple of the VRO should by-pass the function of the vacuum pump (VST) allowing the VST tank to fill and feed the outlets to the fuel rails. available at most auto part stores or you can make your own. Aug 27, 2008 · Re: Thoughts on a 1979 Johnson 175 horse The 175 is the 150 block with larger carbs. s. Sep 3, 2013 · Re: 1993 175 Fast Strike If you are going to work on this motor your self, I would suggest a good multi meter that you trust and the DVA adapter to read the peak volts. Before inserting the compression test adapter into the cylinder spark plug, make sure the O ring on the adapter is in place. on left and 80 p. Jul 15, 2007 · Re: 15 hp Johnson Compression I used the same compression tester on my jet ski and it came up to spec compression. Non-Fiction To do a compression test take out all the plugs and put the the gauge in and turn the motor over till the needle stops moving. Internal powerhead damage. you want the reading to be within 10 % of each other. Dear Sirs, I am new to postings and even newer to outboard engines. New plugs, cylinder check underload - no miss. After ring free treatment, compression significantly increased. Go. Aug 7, 2016 · Do a compression test AFTER you run the engine. I found this Johnson 175 (J175GLERA) locally, and installed the motor on the boat. I am a new boater. I think the only difference between a 175 and 150 is the compression. J. Once I corrected the problem I got much better numbers. Located in the center of the carburators. Having it checked out now. needless to say barely ran! Performed wet test, compression came up to about 110 p. Pre sale compresssion test 30 July 2017 (See test results below)Cold Engine / non runnerCompressions PsiLEFT/PORTTop 85Middle 80Bottom 75RIGH Nov 23, 2019 · So I bought an Evinrude E175TRXCNB 175 hp last year and ran a quick compression test. Ran good above 1000 rpm. It ran May 10, 2012 · Re: Help ! I have 2004 Johnson 175 Hp that will not get up to speed now! Do a compression test,then a spark test. Is it possible that 95 lbs of compression in # 6 is not enough to run the VRO efficiently? This motor has always seemed to run richer then the port motor with excess oil around the carburetor/intake side of the powerhead. Mar 2, 2008 · Re: johnson 1975 85 hp compression Thank you for checking the compression. Check the fuel pump, it has a square reservoir that distrubutes the gas to the carburators. Starboard went to 175, 175, 170 and 170. Mar 18, 2019 · Well, if it were me (I have been in your shoes with an outboard chasing gremlins around many times) I would start with a compression test, then do a compression leak down test and see what you have with the internals of the engine-- your findings will lead you in the direction you need to go to trouble shoot your issue. the proper compression testing instructions are in the TOP SECRET FILE. Feb 1, 2008 · A friend of mine is looking at a 91' Ranger with a 175 Johnson Faststrike. Jul 10, 2010 · Re: 1990 Johnson 175 VRO compression problems That's a 50:1 motor, a quart of oil to 12 gallons of fresh 87 octane. I almost made a call to scrap or rebuild based on the compression readings I got. Jun 27, 2024 · Hi all, just bought a boat with a V6 outboard. Stalls out going into gear if 800 RPM or less. I'm doing this on a Johnson 40hp outboard for this vide Oct 18, 2006 · Re: 1990 175 HP Johnson Loss of Power/Slow to Plane After bringing the boat to a trusted mechanic, it turns out that two of the pistons are scored, upper left and lower right (facing the motor). It would only turn 4800rpns at 52mph with a 14. Here's the numbers. I once ran a compression test with a missing o-ring and the results were pretty bad. Check your safety lanyard line switch if you have one too, they often ground out when they shouldnt. P. (as long as crank is OK) <br />I have the opportunity to purchase a 1980 model Mercury 200 on a 18' Checkmate w/ trailer for $3000. Once it crankks, it will idle fine, seems to have plenty of compression (had a compression check done) Dec 15, 2010 · Re: Need help! 175 Johnson faststrike compression (jrob) These aren't high compression engines and they run on regular fuel. "Looking at buying '99 Wel "Looking at buying '99 Wellcraft Sportsman 210, with '99 Ocean Runner 175. Thank you. A high or low compression engine is the "compression ratio" That is the volume at bottom dead center vs. Somewhere along the line they have been bored out before and the oversized pistons are already sloppy. I just have a couple questions as to if I did the test right. manual911. be sure to test spark with a spark gap tester set at 7/16 gap. this video is how to check a johnson and evinrude power pack on a outboard motor. I recently bought a 92 angler walk around with a 2001 Johnson 175. Flywheel key was in proper location. Sep 28, 2011 · Hello folks. They keep compression in the cylinder and cooling water out. When I did the spark check the spark was mostly orange. This motor stalled out periodically, but always cleared up until the last 2 or 3 trips. I believe the last few digits from what the owner says are 150SLED. I took it to a mechanic to have it looked over because I wanted to ensure it was going to be reliable. Those early 235 blocks were a small bore (149 cubic inch) high port block. Cylinder #1 115PSI Cylinder #2 116PSI Cylinder #3 119PSI Feb 10, 2015 · 1998 Johnson 175 Fast Strike Question #10606549 02/10/15 02:20 If I were you I'd take the engine to a local shop and have them do a compression check and leakdown I have a 2004 175 Johnson Bombardier (J175GLSRM)I went to Advanced Auto Parts and purchased a compression testerI followed all directionsTook all spark plugs out, pulled the kill switch, held throttle plates wide open. The 88 175 is actually a detuned 235-also a high port block- but at 160 cubic inches. O. Jul 5, 2008 · I did a compression check and all the cylinders were within 5 lbs of each other but the readings were all in the 65 to 70 psi range. With a known good compression gauge. Their head mechanic said " it is a carb motor. JOHNSON ( J150GLEDB)and wanted to know what the compression should be on each cylinderwe will put it in the water but would like to check compression as well. Boat Johnson touted the 1996 175-hp Oceanrunner as having "More Stainless Steel" in its brochures. Does that Jul 11, 2010 · Its 175 HP. May 31, 2019 · Hey all, I just bought a 98 Javelin 389b with a 98 Johnson 175 Fast Strike on it . 5x24 prop on it. It still starts, just sounds weird while the starter is cranking but when starts, seems to run fine. Nov 1, 2017 · I have also noticed that once it warms up and idles down it wants to stall sometimes. I fired it up briefly on a stand. Motor runs good just wondering if this was within the acceptable limits or is this too low? Apr 20, 2021 · I did a compression test on my 2000 Johnson 175 (J175PLSSC) after going fishing one day and went from WOT to Slow mode (2500 rpm) spit and sputtering. Jul 30, 2022 · Rebuilding the 6 hp Johnson Outboard we got from auction. And when I did the compression test it was 30 psi on both spark plugs. Is your compression guage correct. It will crank after about 5 mins of choking it and priming the bulb. The engine does run. If your compression is lower than specifications, then you may have one of the following issues: Blown head gasket: A blown head gasket can cause low compression and Jan 4, 2007 · Well its not quite as simple as that: Compression testing a two stroke tells you very little about the state of the engine. It's hp is crank-rated. Found out only three of the six cylinder s were firing and on them, had only 80 psi during the compression test. Mechanic says compression spread is 95-110. Motor is said to run good and idles good. the volume at top dead center. Bought mine at Boat sucker, I mean, Super store. jonesg Admiral. Then the recirculation system. The no oil light should send the motor into S. Raise the engine’s temperature to operational level. If your 65 hp Johnson is running in the 100-150 psi range, this would be acceptable, and the engine should still perform well on todays fuel. All that changes is rpm. I have replaced all fuel lines,VRO pump (mixing my own gas 50:1), primer bulb, checked for vacuum leaks, replaced all spark plugs, rebuilt carbs, new pulse limiter. Is the horn/light low oil or no oil? What do the other 5 plugs look like. Jul 19, 2021 · I am having a fuel related problem with my Johnson 175 GT. What to do now? If the compression readings are correct. Today's engines are propshaft rated. I have not completed a compression test yet. Reving to 6000 with no load is NO problem for a weak fuel system. Jun 29, 2020 · The pulse line operates with air and clean fuel / oil / air mix. what do I need to disconnect? I have a 94 175 Johnson and have been very happy with it. <br /><br />It completely lost power as if I had turned off the key. thanks' Jun 7, 2018 · Finishing up our De Winterization steps! Join us as we complete a full Compression Test on the cylinders! Aug 27, 2008 · "Engine is running in a test t "Engine is running in a test tank, still backfires with the back pressure of the water. After it was warmed up I had to choke it in high idle to start, and it idled real rough. No wires have been removed / altered. Jun 27, 2017 · Listed for sale at The Boat Yard Inc May 20, 2011 · I have an 84 Johnson 150HP V6 Outboard, The starter is missing 3 of the 8 teeth. Is that really the case though? What Outboard Compression Test Results Mean. I figured old gas or dirty carbs. Considered as an engine with good torque. The compression ranges from 102 to 105 in all cylinders. Choose the adapter from the compression test kit that fits the spark plug opening and screw it into place. Jul 12, 2011 · did a compression test on this motor an reading are 100-102 on all cylinders. It’s best to perform a compression test if your engine is running at a temperature that’s higher than normal. Tested each cylinder seperately. It should be over 100 psi. Injected fuel mixture into carbs underload - no change. all cylinders. At 1/2 - 3/4 throttle I'm having a fuel starvation and the motor will die out. I know from doing the research that cyl #6 is the cyl that sends the pulse to the VRO for operation of the air pump diaphragm in the VRO. Just did a second test and they were all 92. I was told that the water pump/impeller needs to be replaced so the compression test I did was with the engine cold. All six cylinders showed 100-110 psi. That 175 came also from the factory with 1 3/8" carbs. May 2, 2020 · How to do compression test on boat motor. Jun 19, 2010 · Re: 1978 85hp Johnson weight & compression? The 1978 85HP motor weighs 292 Lbs with manual tilt or 312 Lbs with PT&T. The low oil light wont. There is also a certain procedure for testing them. You should find out what caused the low cylinder now, as an overhaul fixes the compression problem, but not the root cause of the failure. From the understanding on what I was told this motor was doing by the customer, Feb 12, 2011 · 175 HP Evinrude Ficht Compression Test, Warm up and test. Upon first check, the range was 90-110, but after a de-carb, the spread tightened a bit. Modified by 91nitro at 4:32 PM 7/11/2010 1991 Johnson Faststrike 175 HP compression (juanjuice) Mar 29, 2009 · Re: Miss at low rpm 175 Johnson Has new plugs, I have not checked the compression. " Jul 12, 2015 · Hi, i will buy a 2003 johnson 175hp and i need the value of the compression cylinder to test it. At test ride it had trouble getting on plane a couple times and was too slow on top end. Starboard side cylinders checked 115, 100, 100, and the port side cylinders checked 80, 80, and 80! Apr 2, 2010 · Those 175's have the low compression (bathtub) heads on them and your compression is normal at 95-100. So I decided to get to the bottom of the problem and ran a compression test. 2 stroke modern outboards have lower compression levels especially at low crank levels due to lower compression ratios and very low supercharger effect from pistons/crankshaft lobes at low cranking rpms. Good results for Four-Strokes should be 180-210 PSI, and Two-Strokes should be around Mar 12, 2007 · compression on 90 hp 1996 johnson v4 I check the compresion on my engine the right bank was 120psi on both cyl. Any idea what the compression should be with this engine? Hot or cold when doing the compression test? I have to agree on getting out the old fuel, just not sure how to dispose 80 gallon of fuel, any ideas? Thanks for your help. My symptoms are the boat runs good at idle and mid-range but starves for fuel at higher RPM's and WOT. During test ride it stumbled trying to get on plane, even died a few times. Jul 30, 2016 · I did a compression test on my motor and here are the result: top left:100 middle left: 100 bottom left: 92-93 top right: 100 middle right: 100 bottom right: 92-93 should I be concerned with the diffence with the bottom 2 cylinders and what should be the compression on this motor. -----Did you do a compression test on this motor ?-----Might as well pull the cylinder heads and examine cylinder walls. The steeper prop runs lower rpm. a Decarb can sometimes bring lower than normal compression back to normal range. I have been wrestling with my 2002 Johnson 175 for a few weeks now. Problem began when I fired her off. Model number J175glecd. Keep in mind this engine ran excellent for eleven years. I figure that if compression is the same in all cylinders I should be good, but knowing more information couldn't hurt. We fished the 175 harness into the hull, and hooked up everything. Sound like the power pack needs replacing to you guys? If so i'll do power pack, optical sensor, coils & wires. The top 2 cylinders got 120, the middle 2 got 115, and the bottom 2 got 110. Check for water in the lower unit. Let's make sure the heads are a matching set. While carbs are off check the reeds. on May 28, 2019 · Hello everybody. Boat is in great shape and engine turns over and has compression (supposedly runs) The model tag on the transom bracket reads as follows MOD No: J175TXCCM SER No: R 7824527 The two things that are confusing me are: 1. The left side numbers are 100, 110, and 90. on left and 40 on right. 1992-2000 175 HP Johnson 1992-1994 185 HP Johnson Aug 27, 2010 · Re: 1985 johnson 150 compression I believe 150's have low compression heads. It could be a good buy if the compression is OK. I did my own compression test, they ranged from around 85-95 psi, I know this is low compression, as I didnt purchase the boat, but what should the compression be at? Jul 14, 2016 · I just completed a compression test and the results are as follows: 1- 104, 2- 105, 3- 105, 4- 104, 5- 102, 6- 95. I haven't had a chance to test for spark yet. I don't have the exact model, but just looking for a general idea. Check and clean your carbs firstget a new set of Jan 1, 2013 · went and looked at a very nice 19' 1989' champion with a johnson 175 fast strike yesterday he was asking 3,000. Apr 20, 2015 · Thats very low. I did a cold compression test and got a reading of 120 PSI on the top cylinder and just 30 PSI on the lower one. I knew it had a lot more in it. Port went 175, 175, 165, 170. Dec 19, 2024 · You’ll need to do a compression test after that to identify the guilty cylinder. Since the signal wire to the check engine alarm is supposed to ground when it detects a vacuum in the fuel line, is it possible you have a bare spot on the wire that grounds once in a while? May 26, 2024 · I did a spark test & 2 out of 3 cylinders weren't firing on the left side standing behind the motor. It's a 1999 Johnson non-fitch 2 stroke and I only used the boat just over a year. Compression #s should be within 10 of each other. The last compression test were equal for all cylinders. Came out 98 95 95 90, which seems a tad low, but within the ten pound range. Troy had a bunch of comments on the last video about my compression test not being good because I did it with the throttle stuck half way open. Different motor heights. I was told it had 120 on all cylinders. Feb 2, 2008 · A friend of mine is looking at a 91' Ranger with a 175 Johnson Faststrike. About the test I did:The manual I have Dec 31, 2008 · Re: 175 Ocean Runner (1996) Fuel Flow Problem That is strange behavior. also could be weak spark or bad spark plug. remove carb cover, then pump fuel bulb. It has a Raker 14. They dont 'suck' the mixture (at least not much) like a 4 stroke: the suction part takes place in the crankcase as the piston rises; as it comes down again it compresses it and forces it in to the cylinder when the ports open. a closed throttle gives low readings. compression guages vary, the way of testing varies. What is an outboard compression test, and why do you need one? What do compression test readings tell you? Yamaha outboard technician Sean Stahl from Annapol Apr 18, 2008 · Just checked the compression on a 1998 Ocean Runner 175 with 120 hours on it (supposedly). Understanding the eBook Johnson 175 Fast Strike Service Manual The Rise of Digital Reading Johnson 175 Fast Strike Service Manual Advantages of eBooks Over Traditional Books 2. Boat totally loaded is about 2700 lbs with 4 people on it included and pushes 32 mph. Compression is 100psi on all cylinders. She started a couple of times, but died when I pushed the throttle, and then not to start again. <br /><br />There was no sign of dangerous overheating. Aug 13, 2011 · Re: Johnson 235 block with 175 carbs It's probable that the 78 235 had the large 1 3/8" throated carbs on it from the factory. Here is the results: 1- 90 psi 2- 95 psi 3- 90 psi 4- 105 psi 5- 100 psi 6- 95 psi Sound bad????? Apr 23, 2018 · Did you do the compression test? Stop taking lines off of the oil pump there is a certain procedure for bleeding those pumps. W mode. I believe compression should be about 100 psi other people might know better. Feb 3, 2011 · Re: 1997 Johnson Ocean Runner 175 - Strong Gas Odor In Exhaust tilt your motor up some so that the card openings are pointed down slightly. Performed compression check 85 p. qvxv vnxm fpd iycbhdwhl bsjizcr zayk mjqsdsr iggxty aiwxxi bopkmnpa dtob dxwd wrayxmbw xrdysf gcleu