1978 corvette L-82

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Jan 26, 2012 | 10:13 AM

mrpacecar

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From: nanuet ny

1978 corvette L-82

hi i can not get my engine to rev any lower than 1300 rpm i have try everything need help.thanks

Jan 26, 2012 | 10:18 AM

Stoge

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From: Fair Oaks, OK

Are you talking about idle speed?

Jan 26, 2012 | 11:37 AM

ted13b

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From: Holbrook MA

If thecar won't idle, my first thought is vacuum leak. there are a lot ov vacuum lines on a C3, look for cracked, broken or disconnected lines.

Jan 26, 2012 | 12:02 PM

Shark Racer

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From: San Jose CA

Quote:

Originally Posted by ted13b

If thecar won't idle, my first thought is vacuum leak. there are a lot ov vacuum lines on a C3, look for cracked, broken or disconnected lines.

I'd start with capping all the connections at the carburetor, and reattaching them while monitoring a tach. You could have more than one.

Jan 26, 2012 | 12:19 PM

7T1vette

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From: Crossville TN

Loosen the nuts/bolts holding the carb to the intake. Wiggle the carb around to find where the studs/bolts are best centered in the mounting holes, then hold the carb there while you snug down the bolts/nuts. DO NOT overtorque the mounting fasteners.

I think the primary throttle plates may have been interfering with the intake manifold and that would not allow the plates to fully close.