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Brake Booster Boot hissing (vacuum leak maybe?) 200

uid 6187's pic
posted by  luke242ti on  Wed Jul 16 07:51 CST 2003
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I always seem to run into odd problems. The brake booster rubber boot from the brake pedal rod is hissing. Its only when I dont use the brakes. If I step on the brake pedal enough it will slow the hissing, and more it will completely eliminate it. This doesnt seem to affect engine operation, would this be considered a vacuum leak as it is only there when the engine is running. But it is on the opposite side of the booster from the vacuum source.

Would it be ok to smear some silicone sealer or something on the boot to seal it? If any sealer got into the boot and further what could it damage? Booster, master cylinder?
How hard is replacing that rubber boot?

thanks
take care
Luke






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