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strange idle problem
I rebuilt my SC engine about 18 mths ago. It has run superbly since, except for an odd idle problem. Initially it was odd on warm start up - 5-10 minutes after shutting down. It would idle at about 1700 rpm for about 1-2 minutes, then back to normal at 8-900. Cold idle was 1200 and transition to warm was excellent. Everything else was running so well, I ignored it.
In the last few days - after adjusting valves and changing oil, I was idling it up to get oil level right, and idle suddenly died to about 3-400 rpm. Engine finally spluttered to stop. I had to wind the idle screw out a few turns to pick up enough idle speed , but it is idling lumpily now, instead of the dead smooth it previously had. And the warm start revs are now at 2000+ which is annoying. The AAV is working fine. Any ideas? Alan |
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01-16-2008, 11:13 PM
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Join Date: Jan 2005
Location: KENDAL,CUMBRIA, UK
Posts: 1,580
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HI Alan L
check your oil filler cap is on correct and is sealing, with what you have described is a air leak in the breathing system?? regards mike
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Regards mike 1983 911 SC sport, 1982 mini city |
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01-17-2008, 04:31 AM
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Have checked, and oil cap on securely. All a bit weird, but must be a reason. It was like it suddenly lost a cylinder. Except have just returned from a 500 mile trip and it is running very well at speed. Just a lumpy and sluggish idle with the idle screw wound almost right out.
Used to idle very smoothly. Am about to pull the plugs out. Alan |
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01-17-2008, 09:51 AM
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