Quote:
Originally Posted by gearhead396
As I stated in my message I'd check the brake booster first but Diesel engines do not create vacuum so there is a vacuum pump needed to work the brake booster first thing I would eliminate Is the brake booster and vacuum pump then move on to the rest only if the booster and pump are good
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Quote:
Originally Posted by racer_x
My .02 your brake booster is out
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brake booster doesn't cause the pedal to go down and lose pressure when applied. if the brake booster ere out, the brake pedal would be hard to push all the time. not when applied, then reapplied. brake booster is what amplifies the force you apply to the pedal. failed brake booster would be like having no power brakes.