This is my first post, although I have been reading alot on this website. Here is my problem. I bought a 1989 evinrude 15h.p. short shaft from my friend. A few years ago he said it did not work well and had someone rebuild the carb but that did not help. I have since bought the motor and it has been sitting for about 3 years.
When I first started it with fresh 50:1 mix gas it would die as soon as I hit the throttle. I took the carb apart and discovered that the plastic tube was in pieces and there was also missing the clip that attaches the needle to the float (sorry I do not know all the correct part names). I ordered a carb rebuild kit and completely cleaned the carb with carb cleaner, compressed air etc. I reassembled and adjusted the slow speed needle 1 1/2 turns out from being lightly seated, as per many recommendations I read on this site.
I also installed new plugs, Champion QL77JC4, same that were in it before and gapped at .030". I also took the fuel pump off to make sure that the screen was not clogged, no probelm with fuel passing through.
Put the muffs on, open the vent on the tank, prime and engage the choke. After a few pulls it starts. I fine adjust the slow speed and it idles nice, revs freely to about half throttle. The problem occurs at higher throttle, above the half way point. It runs good then suddendly dies, not sneeezing but more like you pulled the boots off both plugs.
It will start again after a minute or so and needs to be choked. Did some more research and read that Champion L77JC4 are best again gapped at .030", so I tried that as well. Put a bit dilectric grease on the on both boots of the wire. Seems to run a bit longer now, but the same condition exists. I should mention that both plugs have color to them so they should both be firing at some point.
After looking over a few things I noticed that the primer bulb from the tank had a small crack and there were O rings missing at the fittings. replaced the primer bulb and ran the motor making sure the buld was sending fuel to the motor, same deal, motor dies after a few minutes.
I know this is long, almost done. There is water coming out of the pee hole and right after the motor cuts out, I have no problems putting my hands directly on the head, it does not appear to be over heating.
I did try pulling the boot off the plugs while running at idle, when I took the top on off it ran,the bottom it died. Now I am thinking I have a coil that is about to go or a power pack issue. Any help trouble shooting this thing would be great.
Martin
When I first started it with fresh 50:1 mix gas it would die as soon as I hit the throttle. I took the carb apart and discovered that the plastic tube was in pieces and there was also missing the clip that attaches the needle to the float (sorry I do not know all the correct part names). I ordered a carb rebuild kit and completely cleaned the carb with carb cleaner, compressed air etc. I reassembled and adjusted the slow speed needle 1 1/2 turns out from being lightly seated, as per many recommendations I read on this site.
I also installed new plugs, Champion QL77JC4, same that were in it before and gapped at .030". I also took the fuel pump off to make sure that the screen was not clogged, no probelm with fuel passing through.
Put the muffs on, open the vent on the tank, prime and engage the choke. After a few pulls it starts. I fine adjust the slow speed and it idles nice, revs freely to about half throttle. The problem occurs at higher throttle, above the half way point. It runs good then suddendly dies, not sneeezing but more like you pulled the boots off both plugs.
It will start again after a minute or so and needs to be choked. Did some more research and read that Champion L77JC4 are best again gapped at .030", so I tried that as well. Put a bit dilectric grease on the on both boots of the wire. Seems to run a bit longer now, but the same condition exists. I should mention that both plugs have color to them so they should both be firing at some point.
After looking over a few things I noticed that the primer bulb from the tank had a small crack and there were O rings missing at the fittings. replaced the primer bulb and ran the motor making sure the buld was sending fuel to the motor, same deal, motor dies after a few minutes.
I know this is long, almost done. There is water coming out of the pee hole and right after the motor cuts out, I have no problems putting my hands directly on the head, it does not appear to be over heating.
I did try pulling the boot off the plugs while running at idle, when I took the top on off it ran,the bottom it died. Now I am thinking I have a coil that is about to go or a power pack issue. Any help trouble shooting this thing would be great.
Martin