GT235 Carb Adjustments ?

[snpower]

I recently removed and cleaned the B&S carb in my GT235. The engine was surging; I removed the jets and used carb cleaner as well as an ultrasonic cleaner.

After reinstall I ran the engine for 30-40 mins and it was nice and smooth. Fast forward several weeks and the engine is stumbling (acts like it will quit) then it resumes running and at the same time I get a blast of black smoke from the exhaust.

I have read that there aren't adjustments on these? I am looking for further troubleshooting assistance. Thanks!

 

[GrandpaSmurf825]

Does it make any difference in how it runs if you apply varying amounts of choke application to it? If the choke helps then you probably need to pull the main jet and clean again. It's hard to beat a torch cleaning tip set. Carb cleaner isn't magic potion and it only takes a tiny restriction to mess with the fuel air ratio on a small engine.

 

[tomplum]

You may have a low speed adjustment. Provided there isn't a debris issue, maybe a new float valve would fix you up.

 

[snpower]

The float valve needle is new.

I’ll get those torch cleaning tips!

 

[Roadworthy]

Check that the float is moving freely and the needle is actually opening and closing.