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Surging D-jet 140-160 1973

posted by  walrus3 on  Wed Apr 14 15:56 CST 2004
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last visit: Mon Dec 2 14:20 CST 2013
[RELATED]

A bad booster could contribute to it but that is probably more air coming
in than a booster would account for. Is your Aux Air Valve good? I've now
checked 3 and not found one that works ANY. They are all paralyzed in the
open position. I'm planning to use a K-jet electric one, I think. You might
try plugging the hose to it and see if that gets the idle down.
When I got the yellow peril it had a spark plug insulator crammed into the
hose that was supposed to go to the AAV.
Yes it undoubtedly IS a vacuum leak of some kind - your vacuum makes the
idle slow and when it leaks out the idle becomes fast.

Sort of like keeping the darkroom door closed so the dark doesn't leak out.
--
George Downs, Bartlesville, Oklahoma, Central US






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