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Old 08-09-2010, 03:39 PM
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Jimbro727 Jimbro727 is offline
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Sorry for the delay everyone, and thanks for the replies. Had more issues with my knee, work got busy, and life in general got in the way of my project Now I'm back working on it.

A couple of people had mentioned that the front calipers could be swapped - this is not the case, they're on right (I installed them myself). The bleeders are on the top (that's correct, right?).

Today I decided to start plugging different parts of the brake system to try and determine where the issue is. All tests were done with the engine off (so no assist from the booster). Here's what I found:
  • I started by plugging the front system by pluggng the front outlet on the M/C. That caused the pedal to be rock solid. So I figured the issue is not in the rear system (valid assumption?)
  • I hooked the M/C back up and then plugged the driver's side front outlet on the combination valve. The pedal went back to being pretty easy to press. So I figured the issue was not with that side.
  • I then plugged the passenger side front outlet on the combination valve. The pedal remained soft.
  • Plugging both sides at the combination valve should have caused the pedal to become hard again unless the issue was in the combination valve itself, so I plugged the front outlet on the M/C to verify that the pedal was still hard and it was NOT. The pedal was still easy to press. I'm wondering if I sucked air back into the M/C during one of the previous tests, what do you guys think?

That's where I'm at. If anyone could give me some input, that would be great. So far, I think I've determined that the issue is with the combination valve or is somewhere in the front system. If I did pull air back into the M/C during my tests, does that explain why the pedal is no longer hard when I plug the front outlet?

Thanks guys

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---CARS---
1978 Pontiac Firebird T/A - Martinique blue/blue interior - 400 bored .030 over and stroked with an Eagle kit to 458, SRP forged pistons, Eagle crank, 6x heads, comp cams springs, comp cams hydraulic flat tappet cam, TH-350, and a Jeff Walker Q-Jet.



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