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Just got my car working again after a month off the road (Clutch master cylinder worn) and it started okay and ran okay for 4-5mins. Then the the engine /exhaust note started fluctuating. Its only changing by 50-100rpm but its not right. The idle is changing about once every second. I haven't had a chance to hook the laptop up to the car yet but could the Idle be set too low (Its roughly 750rpm at the mo). Any help appreciated... Ta

Posted
Just got my car working again after a month off the road (Clutch master cylinder worn) and it started okay and ran okay for 4-5mins. Then the the engine /exhaust note started fluctuating. Its only changing by 50-100rpm but its not right. The idle is changing about once every second. I haven't had a chance to hook the laptop up to the car yet but could the Idle be set too low (Its roughly 750rpm at the mo). Any help appreciated... Ta

 

 

750 rpm at idle is ok,that sounds like its hunting idle,normally associated with a boost leak,check when you did the master cylinder you have not disturbed some pipes etc,idealy find someone with a boost leak tester and get it pressure tested!or methodicaly go round and listen for any hissing,check generally around balance bar area :)

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