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Engine idling speed

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Pompy

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I have recently purchased a BMW 3 series tourer. This is my first BMW so quite a lot of it's systems are new to me. The engine seems to run at quite high revs when idling. To the point when I reverse the vehicle I can do this with just clutch and brake do not need to touch gas pedal at all. Is high idling speed normal ?

Greydog Grand Master

Greydog

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Hi Phil

Welcome to the Forum

Engine idle with everything up to temp should be about 600 to 650 rpm You will need a diagnostic program to adjust the idle but first I would check all the vacuum lines are in good condition. Also check for any air leaks in the inlet side, also check the PCV system is good and not clogged (no smoke when its been idling for awhile)

Dave

Pompy Rookie

Pompy

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Thanks Dave for your reply. Have checked vacuum hoses. No sign of black smoke left idling for 20 mins. Car was mot and serviced when purchased last month. But not by BMW so hopefully just service issue. 

Pompy Rookie

Pompy

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Forgot to mention idling about 700 to 750 RPM so not massive amount

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