brake booster?
#1
brake booster?
when I put on the brake, I can hear a slight hiss in the cab. If I am at a stop in park the engine idles fine, but if I put on th brake I get the slight hiss for a second or two, then the engine starts to idle rough. I supect there is a leak in the vacuum booster unit, but I am hoping someone can tell me there is some other smaller (cheaper) device that needs changing.
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