Reply to "302 Diagnosis"

4nford"Live wrong and Perspire"

[QUOTE]Originally posted by Cowboy from Hell:
To check for vacuum leaks spray "starting fluid" around where the intake manifold bolts to the heads & where the carb bolts to the manifold & see if you find a spot where the motor speeds up, indicating a vacuum leak.

I've already done this test and no leaks were found. I've also plugged all vacuum ports at the source. Thinking it may have been an internal vacuum leak I have already re installed the intake with no improvement.

[QUOTE]Originally posted by Cowboy from Hell:
Is it possible the lifters are too compressed & as things heat up the plungers are bottoming out & holding the valves open (long shot).
this can happen when the heads have new valve seat inserts, or with new heads.

How can you tell if lifters are stuck compressed? Do you have to remove them and visually check if they are stuck down?

2/25/083:08 PM

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