Hunter013
Well-Known Member
2005 Peterbilt 378
MV3 valve leaks out of exhaust port when tractor brakes are set. Intermittently leaks when tractor brakes are released, but stops if I hit the foot brake.
Changed the MV3 valve, no change. What else should I look for?
MV3 valve leaks out of exhaust port when tractor brakes are set. Intermittently leaks when tractor brakes are released, but stops if I hit the foot brake.
Changed the MV3 valve, no change. What else should I look for?
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