Question about Cars & Trucks
Just rebuilt but still doesnt run right
I've always screwed the air flow screws on the bottom plate all the way in,then start screw them out 2 half turns and up them there half turn at a time
Posted on Dec 04, 2012
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Posted on Jan 02, 2017
The 2.5 L engine is the Pontiac Iron Duke sourced from GM since it was still AMC. They came with Rochester carbs, while Ford used Holley 2 brls on their 4 cyl engines and Chrysler used Carter carbs. You might have the wrong carb and the throttle plates are sticking on the intake manifold. You can try using a carb adapter/spacer. If you drive off road I would suggest buying a TBI throttle body injection system from a junkyard, and pick up a electirc fuel pump. Either new from a speed shop or used from a newer Jeep with a 2.5 L TBI engine, you'll need the computer, harness, relay, sending unit and lines as well. But you can pick up everything at a pick your part yard for cheap (some yards have all you can carry in your hands for $50 days).
Posted on Jul 27, 2009
Check your ignition timing at 3500 rpm you should have about 40 degrees of advance If not, something is sticking in the distributor, either the vacuum or mechanical advance. This will cause a big reduction in fuel economy. Also, check your tire pressure. The cfm on a rochester is really not important. The primary bores are so small and they are the only thing allowing the mixture in most of the time.
Posted on Jan 29, 2010
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