Q: Had bad brake booster after pulling trailer replaced still has vacuum leak inside cab ?

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Pulled a fairly heavy mulch trailer...Brake booster may have been overworked...Had vacuum leak inside cab...Put on a new booster and its still doing the same thing??? Reckon I have addedd replacement booster ? Don't know what else it could be ...Thanks...Don

My car has 250000 miles.
My car has an automatic transmission.

Make sure you do not have a vacuum leak between the brake booster and master cylinder. Sometimes the seal does not sit good and will leak. If it is okay, and you hear a vacuum leak inside the vehicle, then you may need to replace the booster again. You may have gotten a defective or leaking one. To have this inspected, I recommend enlisting the help of a certified mechanic who can verify the problem and let you know what repairs are needed.

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