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1981 K10 250 CID vacuum problem...

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Old February 10th, 2010, 1:33 PM
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mbu
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Default 1981 K10 250 CID vacuum problem...
I have a K10 250 CID truck that seems to have a vacuum problem. When the engine decelerates quickly (let off the pedal) the vacuum goes to zero and the engine dies. Does anyone have any suggestion as to what could cause this?

I have removed different vacuum lines one at a time but that hasn't revealed any leaks.

Thanks for your help!
Last edited by mbu; February 10th, 2010 at 1:46 PM.
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Old February 12th, 2010, 7:51 PM
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leaking intake gasket?????? timing???
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Old February 12th, 2010, 10:14 PM
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If the engine stalls there would be no vac, no matter what was wrong.
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