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B21A Warm Start Valve 200 1981

uid 24778's pic
posted by  khanawalt on  Thu Dec 2 14:30 CST 2004
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last visit: Thu Dec 6 21:03 CST 2007
[RELATED]

I think mine is working--sort of. It's supposed to be open when cold to allow more air and thus more fuel and a faster idle, then slowly close as it warms up the elecric element inside it.

That means that if you connect the hoses with no restriction, it will act like the valve is open (cold) all the time, resulting in a too-fast idle when warm.

If you close it off so it acts like it's warm all the time (slow idle) it may be difficult to start in cold weather. I think they're a little pricey, but if you can find an affordable one more power to you.





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