'96 Johnson 150 carb issues

doublenickel

Cadet
Joined
Dec 2, 2008
Messages
6
Hi All,
Having a few issues with carbs on a '96 Johnson 150 Ocean Runner that I'm hoping someone can help with. I had a rather significant fuel leak start on one of the carbs that looks like it's being caused by a a missing plug in the bottom of the float well. The "plug" kind of looks like a BB in the other (non-leaking)carbs. Has anyone had one of these plugs fall out, and if so it is ok to just plug the hole with epoxy? The carbs are all plastic in manufacture.
Also, I decided to rebuild the carbs after this happened, and noticed that the OMC rebuild kits come with a nylon washer to go under the brass seat of the needle and seat assembly. There were no nylon washers under the seats in the carbs when I took them apart, and I'm certain they have never been rebuilt. The washer changes the geometry of the float assembly enough that there is much less "swing" from open to closed. Should I leave the washers out? The floats previously swung all the way to the bottom of the well, but now have much less movement when adjusted.
Thanks
 

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,198
Re: '96 Johnson 150 carb issues

rebuild kits come with extra parts, they don't all belong in one model,
I had a few parts left over.

You might try a nylon screw in that hole, it won't damage the brass insert.
Go to Ace hardware and grab a few white nylon screws, nylon in brass will provide an airtight seal if you find the right size.
 

doublenickel

Cadet
Joined
Dec 2, 2008
Messages
6
Re: '96 Johnson 150 carb issues

Thanks,
The hole that the plug (BB) is missing from has no threads, just a hole in the plastic carb housing. I was thinking I would try finding a small ball bearing that would fit and then follow with a dab of epoxy.
I've ordered a new housing but might not be in this week, so just need it to get me through until the new one gets here.
 
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