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    Strange noise on de-acceleration 1989 Evinrude 140hp

    Thanks for the reply racerone. No rachet sound it just turned the motor over.
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    Strange noise on de-acceleration 1989 Evinrude 140hp

    Hey guys hoping you could help identify what is causing this noise that is happening on de-acceleration and if its normal or if i have an issue. Its most pronounced at higher RPM. I installed Boyesen performance reeds with the required altered idle jets but that is about it. as you can see from...
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    Difference between 1989 and 1992 throttle bodies on v4 looper

    Thanks Fazt I suspected as much. Would it be better for me to swap out to the newer carbs than to try find better condition throttle bodies? Further to that I noticed that the 1994 version introduces a different throttle body with carbs with idle adjustment screws would they work if i could get...
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    Difference between 1989 and 1992 throttle bodies on v4 looper

    Hi all, I have noticed that my current 1989 0432511 throttle plates have quite excessive play on the shaft this combined with a ton of movement in my linkage rod is given me a headache when trying to get the sync right. My question is, would using a set from a 1992 120hp 0434384 be ok. From what...
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    1989 Evinrude 140hp rough idle

    So I did a pressure check on the gear case and she failed and the oil was milkey so I resealed it. then took her down to the lake to run her in some water which can be seen here. It has improved considerably but still seems to have an issue as while she was cold it was lean sneezing especially...
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    1989 Evinrude 140hp rough idle

    Ok so I think I have it sorted. I went through the whole carby again and nothing stood out. So I decided to pull the idle tube out and shove some single core wire through and give it a real good scrub. Low and behold a tiny piece of fluff came out. Put it back together and now she is running on...
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    1989 Evinrude 140hp rough idle

    Its something to do with that carby as when i swapped it out with #1 the issue moved to #1. Will look into it tomorrow
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    1989 Evinrude 140hp rough idle

    Got some more starting fluid and gave it a squirt in #2 carby and the rpm increased and then misfired and then went back to rough idle. I will swap out another carby to see if it is still a carby issue otherwise I guess I am chasing a vacuum leak.
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    evinrude spark issue

    what did it end up being ?
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    1989 Evinrude 140hp rough idle

    I owe you a beer racerone lol. I pinched the ring. However now I have replaced it and she is not spitting anymore. However, still rough idle and after removing the spark cap from #2 there is no drop in rpm. However all the others cause it to drop rpm. That is top lh side.
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    1989 Evinrude 140hp rough idle

    Yes you are right i have been looking at the wrong carb! That makes much more sense! time to do some more looking.
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    1989 Evinrude 140hp rough idle

    Sorry this is sort of a running commentary but i just want to write it down as it happens so someone with more experience can pick something up hopefully. I rechecked the recirc and found everything to be in good order. I tried to spray some fuel in each carb and found that on all but #2 the...
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    1989 Evinrude 140hp rough idle

    Ok so i have narrowed it down to #1 that is causing the lean sneeze. I pulled off the carby and rechecked it everything was clear and fine. i checked compression which was good. I checked spark which was good. I then swapped #3 carby to number #1 no change. swapped the #3 spark plug to number #1...
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    1989 Evinrude 140hp rough idle

    So after I swapped the components around I primed it up to get rid of all the air in the lines and then ran her on the muffs. Seems better but still has a intermittent lean sneeze. It nearly stalled the engine. Is there a way to test the crankshaft rings without removing the powerhead? I am very...
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    1989 Evinrude 140hp rough idle

    Yes that is correct it was #2 with the bad seat. I was referring to the hand primer bulb. It is currently before the water fuel separator which has a clear drain bottom that is leaking when i pressurize the line. so i think i might move it today so that i will have tank to water separator - to...
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    1989 Evinrude 140hp rough idle

    So it turns out that the number 2 seat was damaged and did not seal. I went through and cleaned all the carbs again with ultrasound bath and tested all the needle and seats as well as float height. Now it when giving it pressure it is leaking from the water separator filter. The rubber o ring...
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    1989 Evinrude 140hp rough idle

    I have done both. the muffs was just to see if the small alterations had made a difference. So i started testing my fuel lines for leaks and i found one around an inline filter which i have now fixed. However when i tested it by giving the primer a solid squeeze i noticed the number two carby...
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    1989 Evinrude 140hp rough idle

    Thanks Faztbullet I invested quite a bit of time to remove all the freeplay from the linkages and ensured they were both fully closed and opening at the same time. I came out this morning to start the head scratching again and there was a puddle of black sooty oil on the ground under the leg. I...
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    1989 Evinrude 140hp rough idle

    So I pulled off the carbies again. They did not seem warped. I removed the throttle body and put some sealant around the plugs and cleaned up the face as I found some small scratches around where the idle port of the o-ring would sit. I also had a peak into the reed valves but nothing stood out...
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    1989 Evinrude 140hp rough idle

    Hey guys i have done a lot of work to my outboard but she still seems to have a rough idle. Now im not sure what constitues as a "good idle" for these old girls so i have uploaded a video HERE. It feels like she is still missing and causes a slight unbalance and is also very smokey. I am...
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