TR6 Idle change when brake is pressed

[FR Burkhart]

Should engine rpm change when the brake pedal is pressed? I am seeing about a 200 rpm drop when the brake is pressed.

 

[NutmegCT]

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

Tom M.

 

[ed_h]

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

Ed

 

[Madflyer]

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

 

[glemon]

Add to the choir, had the same problem, rebuilt booster fixed it.