Engine Problems

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Duckie92

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Hello. So my Dn150 Baja putts alot and revs when i still have my foot on the gas pedal. When i try to climb hills though it putts badly and kinda smells like alot of gas and something burning. Not sure if it's the silent muffler i put or it'/ms not getting enough gas or something. I have a video of what it sounds like but it's not the greatest and no picture. Just want my buggy running again before my brother comes home on the 23rd.
 

Bwdeaton

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Sounds like it could be running rich. If you changed the muffler with something more restrictive, the engine ma be getting less air and need the carburetor jetting adjusted.
 

Duckie92

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Okay. It was running fine the way it was till the muffler ring moved and the plastic cover for the camshaft i think its called that. Air to fuel mixture screw ,which way should i turn it and how much?
 

Bwdeaton

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Yeah lean is definitely likely if the muffler connection is leaking. I was thinking it might be rich because you said it smelled like gas and the muffler had been changed.

---------- Post added at 05:15 PM ---------- Previous post was at 05:11 PM ----------

Normally these carbs for gy6 engines are jetted too lean from the factory because they are supposed to meet emissions. I usually change the main jet up a size or 2 to get it running better and maybe a little more if I change the airfilter to be less restrictive.
 
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