1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Brake booster

Old 08-19-18, 06:42 PM
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Brake booster

would a bad brake booster cause a vaccum leak bad enough for my car not to idle?
Old 08-20-18, 01:50 AM
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Yes. If you look at the size of the vacuum line which powers the brake booster, you'll see that it's about 1/4" ID, making for a sizeable vacuum leak which would negatively affect idle. Probably not too bad once you got some RPM, but any vacuum leak is going to cause poor running condition.
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