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post #1 of 6 Old 08-31-2013, 05:58 AM Thread Starter
jessewv
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'78 CJ-5 Holley Truck avenger

I have a Holley 4 barrel truck avenger carb on a 78 cj5 with a 258 straight 6. It starts and idles great but when i throttle it dies/stalls. Any ideas?

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post #2 of 6 Old 09-01-2013, 06:21 AM Thread Starter
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post #3 of 6 Old 09-02-2013, 06:40 AM
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Have you jetted it for this application?

Where is your vacuum source for distributor vacuum, carb or manifold?

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post #4 of 6 Old 09-03-2013, 09:16 AM Thread Starter
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I don't know what its jetted for, when I bought the jeep it had that on it already. I believe the vacuum goes to the carb. would a sticking float or needle and seat seals cause it?
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post #5 of 6 Old 09-03-2013, 09:54 AM
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Quote:
Originally Posted by jessewv View Post
I don't know what its jetted for, when I bought the jeep it had that on it already. I believe the vacuum goes to the carb. would a sticking float or needle and seat seals cause it?
Before you even begin on the carburetor check the motor for vacuum leaks and proper timing adjustment.
Then:
1.st verify float level. 2. Verify properly operating/adjusted accelerator pump. 3. Check power valve.

All of these suggestions assume your carburetor is clean and in good shape.
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post #6 of 6 Old 09-03-2013, 03:17 PM
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Quote:
Originally Posted by Newtons3 View Post
Before you even begin on the carburetor check the motor for vacuum leaks and proper timing adjustment.
Then:
1.st verify float level. 2. Verify properly operating/adjusted accelerator pump. 3. Check power valve.

All of these suggestions assume your carburetor is clean and in good shape.
I would contact Holley and find out which jets are supposed to be in it for your application.

Float? Could be. The vacuum port for the vacuum distributor should be on teh carb ABOVE the throttle plate/shaft.

What's your ignition timing set at with the vacuum disconnected? At least 12* BTDC?

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