Thread: Need some help with the brakes

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now denny I don't want to get into one of your vendettas with you but that check valve has nothing to do with operation of the booster the valve that is in question is the valve inside the booster that is moved by the application rod hooked to the brake pedal that is commonly refered to as spool valve some real early units used a poppet type valve but any rate the booster has to be disassembled to git to it and I don't think he is interested in doing that on a new unit I know I wouldn't be .....ted

I agree with Ted. Full engine vacuum will not cause the booster to pull down on the pedal. The booster sees full engine vacuum when the engine is running and the check valve's only purpose is to keep vacuum inside the booster when the engine is off. It's called a check valve...not a regulator. We have to remember that he did not have this problem with his old booster....this booster is brand new and diagnostic procedures that are meant to check out a worn out booster won't work on a booster that isn't built properly. More than likely something went wrong in the manufacturing process. P.S. I'm ASE certified in brakes, my folks and I own a shop, and I teach a high school Automotive Service Technology class. Now, I'm not the loudest rooster on the fence, but I can't wait to hear the outcome on this one....If I'm wrong on this I'll just chalk it up to a great learning experience and a lesson learned I reserve the Right to be wrong at any given time

Awesome...I'm going for my master certification in May. Too bad I'll never know it all wish I did though

I went to college over 4 years

Yeah and I though I was done with all that...that was till I got this high school auto tech job. I've got to take 5 classes over the next three years....not even automotive related