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Old Apr 5, 2018 | 09:38 AM
  #1  
N2S3's Avatar
N2S3
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idle

My truck fires easily, but when the engine getting warmer the idle is so low that the engine stops, especially when geared to D but in N she is near stalling.

Any advice to get idle a bit higher? Truck has a Holley 4, don't know exactly which one.
Her engine runs fine, speeds up very well, but all slow traffic or any Halt she doesn't like...

some pics




 
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Old Apr 5, 2018 | 09:48 AM
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From: Roanoke, VA
Originally Posted by N2S3
My truck fires easily, but when the engine getting warmer the idle is so low that the engine stops, especially when geared to D but in N she is near stalling.

Any advice to get idle a bit higher? Truck has a Holley 4, don't know exactly which one.
Her engine runs fine, speeds up very well, but all slow traffic or any Halt she doesn't like...
Is this a new occurrence or has it been happening? Have you first tried bumping up the idle via the idle screw on the carb (by the accelerator linkage)? Checked for vacuum leaks?
 
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Old Apr 5, 2018 | 10:16 AM
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No, that isn't new. First want to idle it higher. Where should I have to look for the Screw.
Posted some pics, they might help.
I suppose there should be a screw for hot idle to open bit more.
 
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Old Apr 5, 2018 | 01:39 PM
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From: sedona az
Sounds like you are running on the fast idle choke settings, then when the choke pulls off your idle drops.

Sounds like you need to adjust your warm idle screw. Possibly adjust your idle mixtures. Possably adjust timing. Check for vacume leaks

There should be a adjustment screw on the throttle lever that will get your idle higher
 
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Old Apr 5, 2018 | 09:35 PM
  #5  
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skyhawc
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From: Roanoke, VA
Originally Posted by N2S3
No, that isn't new. First want to idle it higher. Where should I have to look for the Screw.
Posted some pics, they might help.
I suppose there should be a screw for hot idle to open bit more.
On driver's side of carb, find where the Accelerator Linkage attaches, below this you should see a larger screw/spring. Tightening this will adjust your idle.
 
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