Vacuum leak or....?

135

Asked by Jul 21, 2016 at 10:54 PM about the 1972 Chevrolet Impala

Question type: Maintenance & Repair

I got my 1972 Impala to crank, whenever I
take my foot off of the gas pedal it turns off
immediately, I also her an air type of noise
coming from the driver side of the car
when I give it gas. I don't know what it is!?
As long as my foot is on the gas pedal it
stays on! I replaced the fuel filter, pump
and did a reduiled on the carburetor

6 Answers

27,535

check the vacuum hoses and the big one that does to the power booster/brakes top left drivers side..

27,215

That "air type of noise" is almost certainly a vacuum leak. Sometimes if feel around a hose you'll hear the sound of sucking air change.

Best Answer Mark helpful
135

The thing is, the car doesn't stay on unless my foot is on the gas so how can I check it?

20,030

That is when you need someone else to help you.

27,215

Or put a brick on the gas pedal...

180

If you have power brakes disconnect the hose from the power booster and connect a vacuum gauge to the hose. Put the gauge on the windshield facing inwards and you can read it from inside. Vacuum gauge should read between 18 and 22 lbs.

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