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  #1  
Old 09-28-2002, 10:15 PM
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Join Date: May 1999
Location: Pensacola, FL USA
Posts: 48
Slow Cold Cranking 420 SEL

I have a 1986, 420SEL, and when starting from cold I have to spin the engine several seconds before it will crank. When it does start, it misfires a time or two and runs rough for the first few seconds before smoothing out. When the engine is hot, it cranks quickly on the first spin and runs smoothly from the outset.

I recently completed a full valve job, renewed the timing chain and replaced all components in the ignition system. I wondered if the "cold start valve" might be causing the trouble, but it's my understanding that it doesn't come into play until the ambient temperature falls below 49 degrees F.

I welcome your remarks. William
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  #2  
Old 09-29-2002, 03:09 PM
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Join Date: Dec 2001
Posts: 571
William:

Check out what Steve Brotherton had to say about the cold start valve in this thread:

Hard Starts
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  #3  
Old 10-03-2002, 04:16 PM
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Join Date: May 1999
Location: Pensacola, FL USA
Posts: 48
Mike:

Many thanks for your response. I did a search before posting my question but I missed the thread you referenced. My "trouble shooting" so far has produced negative results but I'll stay at it.

Thanks, William
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