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-   -   84 6 cyl automatic, low idle: need help (https://67-72chevytrucks.com/vboard/showthread.php?t=822229)

hooverfish 05-28-2021 09:28 PM

84 6 cyl automatic, low idle: need help
 
2 Attachment(s)
So it idles too low in neutral, barely runs in gear when stopped. Runs fine going down the road.
Checked all vacuum lines and replaced several. New plugs, cap & rotor.
Adjusted timing couple of times, no change on the idle speed.
Would like to find the idle adjustment screw but cant find it. Looked and looked.
Throttle linkage is on back side of carb facing the firewall, hard to see (second picture).

Anyone know how to adjust, or ideas ?

Palf70Step 05-29-2021 08:19 AM

Re: 84 6 cyl automatic, low idle: need help
 
1 Attachment(s)
I have a pdf on adjusting those carbs, but it is too big to upload to board. I can email it to you if you want. Here is pic from instructions. that may help

geezer#99 05-29-2021 08:34 AM

Re: 84 6 cyl automatic, low idle: need help
 
Pic in post #4 here to see where it is.


https://forums.justcommodores.com.au...varajet.53333/

hooverfish 05-29-2021 10:36 AM

Re: 84 6 cyl automatic, low idle: need help
 
1 Attachment(s)
Quote:

Originally Posted by Palf70Step (Post 8926219)
I have a pdf on adjusting those carbs, but it is too big to upload to board. I can email it to you if you want. Here is pic from instructions. that may help

Hello Bill, please send me the PDF, I will PM my email address.
Was reading your build thread on your blue shortbed last night, very NICE.

Quote:

Originally Posted by geezer#99 (Post 8926226)
Pic in post #4 here to see where it is.


https://forums.justcommodores.com.au...varajet.53333/

Hello Geezer, my carb looks different, no idle bypass screw above the mixture screw, mixture screw is 'capped' I believe. Or am I looking at this wrong.
Thank you both for your help !

geezer#99 05-29-2021 11:45 AM

Re: 84 6 cyl automatic, low idle: need help
 
You asked for idle screw.
Pic shows it.

hooverfish 05-29-2021 01:36 PM

Re: 84 6 cyl automatic, low idle: need help
 
Quote:

Originally Posted by geezer#99 (Post 8926290)
You asked for idle screw.
Pic shows it.

Thank you

hooverfish 05-31-2021 08:16 AM

Re: 84 6 cyl automatic, low idle: need help
 
Quote:

Originally Posted by Palf70Step (Post 8926219)
I have a pdf on adjusting those carbs, but it is too big to upload to board. I can email it to you if you want. Here is pic from instructions. that may help

Bill, the PDF was very helpful, I found the adjustment screw !
It's in the base of the carb, firewall side, below the throttle linkage.
Thank you ! and have a wonderful Memorial Day.

geezer#99 05-31-2021 12:08 PM

Re: 84 6 cyl automatic, low idle: need help
 
Are you gonna share a pic of it’s location.
Is it in those pics I linked.
Might be somebody comes along on a search in the future.

hooverfish 05-31-2021 01:22 PM

Re: 84 6 cyl automatic, low idle: need help
 
2 Attachment(s)
Quote:

Originally Posted by geezer#99 (Post 8926290)
You asked for idle screw.
Pic shows it.

Thought you had this covered ?? :lol::lol::lol::lol::lol:

Drawing is from Bill's PDF


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