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Old 04-05-2013, 11:14 PM   #6
Mack B
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Join Date: Apr 2012
Location: L.ower A.labama
Posts: 518
Re: Idle issue with 63 chevy

Quote:
Originally Posted by Rich 5150 69 View Post
When you remove your filter, before you install the new one crank the engine over with the fuel line open into a container, two reasons check condition of fuel pump and clear out any debris that might be in there, into a container you can see in. There may be junk in the tank, clogged sock ( screen on the line in the tank )...
Thanks sir ill do that and report back tomorrow

Quote:
Originally Posted by Rufton View Post
When tuning idle A/F mix screw I turn screw CW till idle gets rough.
I mark mix screws w/ white out at leanest smooth idle.
Then I turn CCW till rough idle and note how many turns from lean idle to rich idle.
I usually idle near lean limit and I run coldest plug engine will tolerate.

I would pull some plugs and make sure they are correct color; near white to tan w/o deposits.

I would do a quick linkage binding check.
That's the procedure I followed on the idle mixture as well, it just seems odd to me it would have came out of adjustment out of the blue. Linkage moves free, the problem of it temporarily idling high after adjusting the idle speed went away with adjusting the mixture. Ill pull the plugs tomorrow and get some pics, thanks for your help!
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