Quote:
Originally Posted by SouthArk370Z
The FSM (link in sig) should have test procedure and more info about possible problem causes.
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Looks like I may have found it:
Quote:
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Originally Posted by FSM
Check the air tight condition when the master cylinder and the brake booster is installed.
1. With a handy vacuum pump, apply vacuum pressure of −66.7 kPa (−500 mmHg, −19.70 inHg) to the
brake booster.
2. If the air tight condition cannot be maintained, perform the following operation.
a. Check the no dirt and dust are present on the brake booster and brake master cylinder mating faces.
Clean it if necessary.
b. Check O-ring on the master cylinder. If anything is found, replace the O-ring.
c. Check the air tight condition again. If the condition still cannot be maintained, replace the brake booster
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I'll report back. Thanks a ton!