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With cold engine,when accelerating engine hesitate,when warmed up,it runs normal

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  • Cars & Trucks Master
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Could be leaking intake manifold gasket , when vehicle warms expansion of the gasket seals the leak . When cold use spray carb cleaner and spray around the intake if there is a leak it will suck in the cleaner and you will hear engine rpm go up. or you can also use bottle of water . How To Find Vacuum Leak EricTheCarGuy

Posted on Dec 30, 2016

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if they are carburetor type motors you may need your carbie cleaned and a tune up
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although a car should idle at 800 rpm my paddok car dose when it is cold it idles at 1200rpm i like it this way as the car warms up quicker as i will not drive a car while it is cold
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