1981 Skylark WOT No brakes?

Question

hello fellow enthusiasts,I have just inherited a 1981 buick skylark, with 33k miles on it, it was myuncles and was garaged for the last 5 years,recently i took it out for a test drive and noticed when i floor the gas, icannot push the brake pedal, its almost as if its stuck, but the second ilet go of the gas it returns to normal within 2-3 pumpsi was wondering if this is related to engine vaccum? or would it be a lowbrake fluid situation? i didnt get a chance to take a peek of the fluidlevel .  anyone have any suggestions?thanksmike

Robert Hancock · Accepted Answer

There is a check valve for the power brake booster (I think it's part of thefitting where the vacuum hose attaches to the booster) which is supposed tokeep the vacuum in (or should that be, out?) of the booster when the enginevacuum decreases. It's probably broken.

Bobo · Answer

I gotta be the first to ask ya....why would you floor the gas, then slam on the brakes.....????? all withoutreleasing the gas pedal?????you won't have any vacuum to run the brakes... It probably does have a backvacuum check valve, but that's a helluva way to check.....

Jim · Answer

I agree with the other guy - it's the check valve.  A spider probably made his home in there and now his body is jamming it open.Jimturismo wrote:

1981 Skylark WOT No brakes?

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