Poppin fool

[Germy]

Downshifting causes gurgling and popping. The exhaust has a strong fuel odor. The carb looks to be pretty original 2b with electric choke. Is there a mix screw??? Also, has anyone taken their jeeps to a muffler shop to have a system installed?

 

[Purple77CJ7]

There should be two adjustment screws on the front of carb. I had a local muffler shop put dual exhaust on my jeep, with magna flow mufflers and areo tips.

 

[Purple77CJ7]

Depending on what carb you have, the adjusting screws could also be on each side of carb. Look for screws with a spring on them down low on carb.
Also look for vacuum leak for popping and rich fuel smell at carb base and intake manifold gaskets.

 

[Germy]

There are two screws in front on the l passenger side and right drivers side. Which are what? I havnt even thought of a vacuum leak! Thanks!

 

[Purple77CJ7]

They are both idle mixture screws, one for each barrel. A good starting point, is to turn them both in all the way and back out 2 1/2 full turns. Then adjust in or out to get smooth idle.

 

[Purple77CJ7]

I also thought if you think it's over fueling, then you need to rejet the carb and/or the metering rods. Sounds more like vacuum leaks.

 

[Germy]

I'm thinking leaks as well. Carb vacuums, pb booster vacuum and vacuum at dizzy. Am I missing something?

 

[Purple77CJ7]

Carb to intake manifold and possibly intake manifold to heads.

 

[Germy]

Leaning it out did not help. Replacing carb gasket tomorrow to try to see if I can solve this.

 

[Germy]

What if I puffed carb cleaner at suspect vac leaks and see if engine revs a bit. The vac leak would suck in the cleaner andmake engine rev a bit. Would this work?

 

[1986cj7]

What if I puffed carb cleaner at suspect vac leaks and see if engine revs a bit. The vac leak would suck in the cleaner andmake engine rev a bit. Would this work?

Yes this will work, just watch out for hot spots like exhaust manifold, and I've heard on this form to watch out for disturbutor area I guess someone had spark issues and caused a fire. Keep a fire exstinguster on hand just in case.