I made this post on Saturday and received some good info from some people on here. I am reposting it here now because I can only access my post by doing a search, If I go back to Saturday at 2:51pm I see other posts but not mine. Being new to the sit, I figure I'm doing something wrong. Below is the original post and the answers I got. Thank you very much for the help. I decided to take Boobie's advise and do a spark test. Result top port side spark would only jump about 1/4 inch weak yellow. Just put a coil on it and problem is 80% corrected. All other sparks were 7/16 and hot blue. I'll take it to the lake tomorrow and see how it runs. My question now is should I look to the carb for the little bit of fuel still coming out? FYI
I have a 1989 88 HP Johnson. After not being in the lake for a year, but having been run every month or so in the drive with water circulation I took it to the lake. Took a couple minutes to get to running right and ran up and down the lake for about 15 minutes. Went to eat lunch and came back and it would run, but no speed... maybe 10-15 MPH. On inspection I noticed that while it's running, the bottom carb mists gas out the front. I removed the carb and disassembled it. Didn't have any new parts to put in it at that time so just cleaned it and made sure of no obstructions. Put it back on and same thing happens. It will run but mists fuel and skips a beat every 5-10 seconds. I changed spark plugs and that?s all. New fresh gas.
I am thinking of swapping the coils to see if it would transfer the problem to the upper carb and thus maybe diagnose a bad coil. Would this work.
Thanks for any help
Mike
Do a compression test on it. Then check your spark which should jump a 7/16 " open air gap on a spark tester. Boobie
Your reed valves are probably bad, cracked or broken. The misting is from the air being forced back out the carb as the piston pressurizes the crank case. When the reed valves are working properly the block the air from going back out the carb forcing the fuel air mixture into the cylinder. Remove both carbs, remove manifold. The reed valves are the little things that look like fingers. They are little flappers so to speak. treat them very carefully. Jakedaawg
DargelJohn agreed
Thank you guys
I have a 1989 88 HP Johnson. After not being in the lake for a year, but having been run every month or so in the drive with water circulation I took it to the lake. Took a couple minutes to get to running right and ran up and down the lake for about 15 minutes. Went to eat lunch and came back and it would run, but no speed... maybe 10-15 MPH. On inspection I noticed that while it's running, the bottom carb mists gas out the front. I removed the carb and disassembled it. Didn't have any new parts to put in it at that time so just cleaned it and made sure of no obstructions. Put it back on and same thing happens. It will run but mists fuel and skips a beat every 5-10 seconds. I changed spark plugs and that?s all. New fresh gas.
I am thinking of swapping the coils to see if it would transfer the problem to the upper carb and thus maybe diagnose a bad coil. Would this work.
Thanks for any help
Mike
Do a compression test on it. Then check your spark which should jump a 7/16 " open air gap on a spark tester. Boobie
Your reed valves are probably bad, cracked or broken. The misting is from the air being forced back out the carb as the piston pressurizes the crank case. When the reed valves are working properly the block the air from going back out the carb forcing the fuel air mixture into the cylinder. Remove both carbs, remove manifold. The reed valves are the little things that look like fingers. They are little flappers so to speak. treat them very carefully. Jakedaawg
DargelJohn agreed
Thank you guys