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Discussion Starter · #1 · (Edited)
Ok, like most people on here, I'm about to pull my hair out!!! lol!

I have a 1992 J70TLEND. My problem is that the bottom cylinder is not working properly. It seems to be firing fine now, put on all three new ignition coils and a new power pack. When I place my hand over the bottom carborator, it does not kill the engine, likewise when I spray starting fluid in, it changes nothing. The other two cylinders respond to both, and seem to run fine. Running compression is same in all three, as well as standard compression is the same on all three..140lbs. I checked the reed valves, and they seem to be in good shape. All three carbs have been rebuilt. ?????? We even switched the top and bottom carborator, and the same problem still occurs at the bottom cylinder. Any guesses?????
I hate to take it to the shop.

Dave
 

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I hate to send you "off-site" but here's a link to the Johnson motor forum on IBoats. 150,000 members. I've always gotten good advise from OGF members, IBoats is just bigger & has resources more specific to your motor brand. If you don't own one, buy a manual for your motor.

http://forums.iboats.com/forumdisplay.php?f=24

I have the 1981 version of your motor & love it. Hauls butt, reliable, & easy to start.
 
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