Thread: Need help re brakes
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Old 07-03-2007, 06:59 PM
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Welcome to the AlfaBB, 67Super.

Quote:
Originally Posted by 67Super View Post
...I tried pushing the brake pedal at idle to see if the revs would change as i believe this is indicative of a faulty servo, no variation in revs was observed.
Actually, it's the other way round. On a system that is functioning properly, pumping the brake pedal causes the servo to 'use' vacuum. Since the vacuum source is the #4 cylinder, this vacuum use will lean the mixture to #4 cylinder and cause an RPM change.
I'd check first to see if there is vacuum at the servo. Disconnect the hose at the servo, start the engine and feel if there's any vacuum in the hose.
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Series 1 Euro 1750 GTV
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