A hesitation on a carburetor, would indicate a lean mixture, caused
by a weak accelerator pump. Test your line pressure to be at least forty
pounds. Pinch the return line and look for ninety. A little trick is to
remove the plug cover hiding the adjustable screw in the center of the
pressure regulator sitting atop your throttle body venturi, that looks
like this: http://www.jetchip.com/fuel/fpr.cfm Otherwise, it'll be a
learning experience reprograming your computer.
God Bless America, ßill O|||||||O
http://www.billhughes.com/

wrote:
>
> Hey all,
>
> I own a 1978 CJ-7 with a 304. The previous owner installed a new TBI
> system and I am trying to find out how to properly set it up. I am
> having a lot of problems with hesitation. The engine runs great when it
> is cold but after it warms up it develops a bad hesitation from idle or
> in the low rpm range. I am a pretty good mechanic but I dont know much
> about setting up a TBI system. Thanks in advance for any help.