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TR6 Idle change when brake is pressed

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Power brakes? There may be a vacuum leak in the booster when the brake pedal is pressed.

Tom M.
 
Agree with Tom. Any more than a quick momentary change in idle soeed would suggest a problem with the brake booster.

Ed
 
Yes Brake booster if it were the line would be a different problem. Check this at idle remove the valve cover oil cap and what does the RPM do it might be the same as your brake peddle does I would guess
Madflyer
 
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