[C2] 1963 split window idle issues

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Aug 29, 2020 | 09:27 AM

#21

Dan Hampton

Le Mans Master

Joined: Sep 2008

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From: Lake Minnetonka, Mn

2018 C1 of Year Finalist

Quote:

Originally Posted by ZERRY 316

What does "split window" have to do with engine idle?

I think he was merely telling us what year car he had without mentioning the year.

Aug 29, 2020 | 11:11 AM

#22

cardo0

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Joined: Oct 2002

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From: Las Vegas - Just stop perpetuating myths please.

Someone misread my post. I mentioned to try ported vacuum (if the OP is currently connected to manifold vacuum now) - not switch from ported to manifold. And yes it makes a difference as that's one of it's functions being a port above the throttle blades is to delay the ignition advance (I don't how you could possibly say it doesn't make a difference).

Aug 29, 2020 | 01:26 PM

#23

tbarb

Safety Car

Joined: May 2014

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Quote:

Originally Posted by cardo0

He probably misread your post, going to a ported vacuum as a test may allow for the transfer slot to be uncovered more allowing more fuel at idle so I think it may be good to try.

With the low in gear vacuum reported there is not enough signal for the carburetor calibrations. The O/P could test by using a rag over the carburetor throat to see if reducing the air making the mixture richer gets him in the right direction.

Aug 29, 2020 | 08:26 PM

#24

moonframer

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Burning Brakes

Joined: Feb 2011

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Thanks foe sharing your story. You sure wouldn't guess a PCV valve could cause that kind of problem. Good to know. I finally solved my issue. The engine builder installed a cam with too much duration and I didn't pull enough vacuum for the power glide. I know have 19 inches of vacuum and the car runs nice and smooth in gear at idle.