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Old 05-16-2012, 03:19 PM   #285 (permalink)
tower74
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Join Date: Oct 2011
Location: KCMO
Posts: 1,597
Drives: 2017 ZL1 Camaro
Rep Power: 369
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Quote:
Originally Posted by blackonorange View Post
K guys so slight hiccup , my car idles high and fluctuates down to 500 rpm but then goes back up to like 1100 or so, my vacuum is also low at idle, this screams vac leak I know any places where I should look first ?
It's an exhaust leak....I know had the same issue. Check the clamps on the piping. When I had it up on the lift ,running, I could fill the air flowing out. My vacuum pressure went from 20 to around 11. Then the other side started leaking and the boost went from 9 to around 6. You can only tighten those so much before they have to be replaced.
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