brake booster?

wildman6bt

Diesel = Broke
Joined
Aug 3, 2010
Messages
1,653
Alright all you intelligent peopl. When I drive my truck for 15 minutes or so I just get a real hard brake peddle out of no where. Pretty much like there is no vacuum or like the truck is off. If you let it sit it goes back to normal. When I was checking for leaks from things cuz I just did a head casket I noticed that the hose coming out of the vacuum pump was collapsed. So I found so fuel line and fixed that. I drove the truck that night and it happened (1st time). I got it towed home I thought I may of cracked the plastic T in the middle of the line. I replaced it with a brass one and still have the problem. I think the booster is going out bcuz I don't think the vacuum pump would just randomley take a poop on you. I've been working the bugs out of this thing lately and its driving me crazy. thanks
 
you can guess at the problem, or you can diagnose it...

Rig up a temporary vac gauge and go for a drive and see what happens. IF the vac stays good, chances are the booster is the issue.
 
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