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Slow Idle On Cold Start?

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Old Dec 10, 2004 | 07:12 PM
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Slow Idle On Cold Start?

Just bought 79 f150 351m holley carb how do i speed up idle for cold mornings. New at this so as much detail as possible would be great. thanks guys
 
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Old Dec 10, 2004 | 07:44 PM
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Fast idle circuit is wonky.

You may need to lubricate the linkage & replace the choke spring.

The linkage may need adjusting as well.
 
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Old Dec 10, 2004 | 07:52 PM
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thanks

thanks i'll take a look at that linkage... in the light tomorow
 
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Old Dec 10, 2004 | 08:09 PM
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When it's cold :

you hold the acellerator in the full on position.

The choke butterfly should close (without help or any effort) to leave a 2mm (1/8") opening to the airhorn of the carb.
The fast idle circuit is mixed in with the choke lever.
Watch for binding, bad adjustments in the levers,


Sorry, I don't have a pic of the 2v holley to show you
 
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Old Dec 10, 2004 | 08:12 PM
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ur helpful!

I notice you (mil1ion) are all over the forums its nice to know there is alot of knowledge out there I'll keep ya informed. Andy
 
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Old Dec 11, 2004 | 09:25 AM
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I've found that they are usually just binding. Spray about 1/2 can of carb cleaner all over the linkages and then some lithium lube - that usually works for me...

Marty
 
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Old Dec 11, 2004 | 01:56 PM
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i thought lubricating any part of a carb was a no no
 
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Old Dec 11, 2004 | 10:48 PM
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Yep, It attracts more dirt and will bind up again sooner.
 
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Old Dec 11, 2004 | 11:22 PM
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no lube just carb cleaner, it has a small amount of oil in it, its all a carb needs.....this holley on your rig, is it even an automatic choke?? or is it a manual choke?? mil1on is right about the pushing the throttle, if its automatic choke, personally i take the choke fins off my holleys, usually only takes a couple touches of the pedal to prime it,i hold the rpms up manually, and it only takes a couple mins to get the motor idleing good......but thats me and im different like that
 
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Old Dec 11, 2004 | 11:41 PM
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Yes, you are correct, I was thinking to say *spray the linkage with Carb cleaner* but came out as lubrication.
Doh Me !
 
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Old Dec 12, 2004 | 06:12 PM
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thanks

I will try the carb cleaner only first and let ya all know how it goes. thanks for the input. p.s. yes holley auto choke
 
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