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Old 09-23-2009, 12:41 AM   #1
Join Date: Aug 2009
Posts: 45
Replacement Webber carb setup problems

We just had a replacement (aftermarket) webber carb installed on a 1989 6 cyl YJ, because the orriginal was cracked, and now the car bogs on starts, and bogs/backfires real bad if you stomp the gas. I know its running way too rich, but how do i fix this? does the carb have jets that have to be changed out or what? How do i go about dialing the mixture in? -Thanks

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Old 09-24-2009, 10:03 PM   #2
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Join Date: Sep 2009
Location: Yonkers to Hopewell
Posts: 7
Webbers need fuel pressure regulators. Our stock fuel pumps give an unsteady 7 psi while the webber needs 3.5 psi. Check the webber site for the model Holley FPR they recomend. It also give instructions on adusting mixture.
Good luck
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