My carb seams to pop and have hesitation at cruising speed , seams fine at idle and when i get on it if but if i just sit at say 50 it has the occasional pop pop pop any ideas oh ive checked for leaks

 

Might be slightly lean on cruise man.

 

What type of carb, bike, and what mods ?????
John

 

84 evo ,cv carb

 

Does it Pop more When decell going down hill?

 

sounds like some dirt is in there. doesn't take much, just a speck in one of the jets and that's what you get.

 

I chassed this problem for over a year on my evo, It is a lean problem caused by either an air leak, lean jetting or both.

First replace intake seals and the seal from the carb to the manifold. second (since the carb is off) replace the OEM needle with a 88XL needle. This will richen up the mid range RPM. Check the jetting while you're in there. With an air cleaner and exhaust, I would run a 46-48 and 180-185 but would be guessing. If you dont dyno it get a few sets of cheapo plugs and do plug checks with various adjustments.