08-04-2008, 12:19 PM
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Registered User
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Join Date: Jul 2007
Location: Oregon, Illinois (about 100 miles due west of Chicago)
Posts: 354
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Quote:
Originally Posted by M.B.DOC
Allows for accelerator enrichment during warm-up
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I've always had a difficult time with initial startup when the car is stone cold (first morning start). It will start right up, then the rpms will drop to near zero, the engine will stumble for few seconds then stall but will restart easily. It does this over and over for about a minute, or a little more, then the idle will rise to normal and the car will start, idle and run perfectly the rest of the day.
I have a separate thread running for that problem as I bought another warm-up compensator that turned out to have a different arrangement of vacuum connections (since abandoned as the wrong part). ctaylor738 advised picking out the screens located under the large fuel line connection on the warm-up compensator and cleaning them individually, which I did.
When started this morning the symptoms were much less than usual. The rpms did not drop as low and the idle stabilized in about 15 second instead of a minute or more. The thing is, it was as I was putting the warm-up compensator back in after cleaning the screens that I broke and then by-passed the "70C thermo-vacuum valve."
Could a possible failure of this valve have been the problem all along instead of the warm-up compensator?
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2000 Mercedes S500
1990 Mercedes 560SEL
1970 Triumph Spitfire
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