vacuum

1988 OLDSMOBILE 98
228,000 MILES
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MAROHDC
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hi i have an 1988 oldsmobile 98 and iwant to know why it idolates sumetime and sumetimes it dont i also dont know it has a vacuum leak so could you be able to tell me how to check the vacuum leak and where to look ok and i have another problem i would like to know why when i brake or before i brake all the way it has a little jump to it and at the same time it idolates to
Aug 15, 2012 at 3:10 AM
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MHPAUTOS
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Often you can hear a vacuum leak at idle, it will be a hiss sound, you can listen with a piece of rubber tube to your ear and the other passing around inlet manifold gaskets and vacuum switches, if there is a leak you will hear it quite clearly, please describe the brake problem with a bit more detail, i don't quite follow what you mean by a little jump.
Aug 15, 2012 at 8:01 AM