Mechanics

WHY IS MY BRAKE PEDDLE SO STIFF BUT MY TRUCK DOESN'T STOP ON THE DIME?

1995 Chevrolet Tahoe • 199,000 miles

My mastercylinder is full. I bled all for sides but I still don't have good braking even though my brake peddle is really tight. How can I fix it and where should I start?
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Phabio95
September 22, 2011.



Check brake booster (vacuum)
check rear brakes
check EGR valve is stuck open

BMRFIXIT
Sep 22, 2011.
Thanx BMRFIXIT. I tried to check the vaccum. By turning the truck off and pumped the brakes a few times then started it up with the brake peddle still pressed and it didn't drop at all. It stayed stiff even once I turned the truck back off.

Tiny
Phabio95
Sep 22, 2011.
When engine start it should drop if not bad booster or vaccum valve on it
check and replace as needed

BMRFIXIT
Sep 22, 2011.
I got under the truck and followed the brake line and found out it has rusted out. I only moved it a little bit and it caused a huge leak in the brake line.

Tiny
Phabio95
Sep 23, 2011.