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

46,595

It sounds like your master cylinder seals went bad.

3 out of 3 people think this is helpful.
46,595

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 out of 1 people think this is helpful.

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

1 out of 1 people think this is helpful.

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

1 out of 1 people think this is helpful.
46,595

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 out of 1 people think this is 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 out of 1 people think this is helpful.
148,525

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 out of 5 people think this is helpful.

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

1 out of 1 people think this is helpful.
148,525

Oops, that diagram is clutch. My bad

5 out of 5 people think this is helpful.

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