brake pedal goes to floor and will not pump up. resovoir full. does this sound like master cylinder or booster? thanks in advance

Asked by Nov 02, 2015 at 01:04 PM about the 1976 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

9 Answers

86,075

It sounds like your master cylinder seals went bad.

3 of 3 people found this helpful.
86,075

I would add that now would be a good time to replace the brake fluid with a good DOT 4 fluid like Castrol LMA. That is unless you have silicone fluid in your system already. You can't mix silicone and regular brake fluid. Bleed the whole system out so you have fresh fluid at all four brakes.

1 of 1 people found this helpful.

Thanks for your help. going to do it thi s weekend if weather good.

1 of 1 people found this helpful.

probably has mostly original in it since only 76,000 miles on.

1 of 1 people found this helpful.
86,075

If the system is 100% original you may be in for rebuilding all the brakes soon but replacing the brake fluid every 5- 10 years will extend the system life a lot!

1 of 1 people found this helpful.

just bought this summer, brake shoes and pads replaced before I got it so I will have my guy check them when he rebuilds front suspension.

1 of 1 people found this helpful.

Have a look at the linkage. I am by no means a Corvette guy but on any car to have both plungers go bad at same time is very rare, it is redundant system in master cylinder... http://www.ecklerscorvette.com/diagram/view/index/id/139/

5 of 5 people found this helpful.

it seems to stop better in reverse, in drive it slowly slows down.

2 of 2 people found this helpful.

Oops, that diagram is clutch. My bad

5 of 5 people found this helpful.

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