Brakes leaking...AGAIN. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**COBALT** · 07-31-2007, 12:30 AM

This time my master cylinder is seeping, or what appears to be a leak at the base of the master cylinder where it mounts to the brake booster. I found it while pulling my spark plugs for a tune-up, and my arm came away with brake fluid on it from the booster. It's running down, and collecting at the base of the booster.

What's frustrating is that the whole master cylinder and booster are about a year old. I rebuilt the back brakes myself, but I had a shop do this because I didn't have the time.

So...do I need to empty out my lines, the master cylinder, clean everything, and reseal, or can I somehow fix this with brake fluid in the lines? How do I bleed the whole system? Can I just do a basic brake bleed to each wheel and call it good?

07-31-2007, 12:30 AM	#1
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Brakes leaking...AGAIN. This time my master cylinder is seeping, or what appears to be a leak at the base of the master cylinder where it mounts to the brake booster. I found it while pulling my spark plugs for a tune-up, and my arm came away with brake fluid on it from the booster. It's running down, and collecting at the base of the booster. What's frustrating is that the whole master cylinder and booster are about a year old. I rebuilt the back brakes myself, but I had a shop do this because I didn't have the time. So...do I need to empty out my lines, the master cylinder, clean everything, and reseal, or can I somehow fix this with brake fluid in the lines? How do I bleed the whole system? Can I just do a basic brake bleed to each wheel and call it good? __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.