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vacuum leak near brake booster help

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    #1

    vacuum leak near brake booster help

    curently i started hearing a hissing/sucking noise coming from the engine compartment.... i did some research on how to look for a vacuum leak... i tried out the carb cleaner and putting the end of a hose next to my ear and the other end where i thought the leak was at, it seems like its coming fom the brake booster... i sprayed carb cleaner around where the brake master cylinder is bolted up and the hissing noise would go away but the engine idle wouldnt go crazy... is it bad if i dont do anything about it and what things could be messed up ( any sensors, does it have a seal or anything ikek that?)
    thnx for any help
    Tags: None
    #2
    The vacuum leak won't ruin any sensor, it will only make your vehicle more difficult to drive. It's possible it may mess up your air / fuel mix a bit as well, as the ECU isn't aware that there's a leak (I could be wrong about this though...). Try using propane near the leak and see if it changes the idle. It's probable that the carb cleaner being a liquid is "plugging" the leak, and that's why the hissing goes away but the idle doesn't change.

    Why not just fix the issue? Replace the bad hose or replace the bad gasket/o-ring and call it a day.

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      #3
      ive seen a brake booster failure destroy a motor on a old corvette because it would suck all the air out of the cylinder which would cause the fuel to wash down the cylinder.
      I <3 G60.

      0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

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        #4
        ...

        yea bu since its coming from the brake booster would it still mess up the air/fuel mixture

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