Does this Holley idle linkage look correct? - JeepForum.com
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Unread 05-24-2013, 07:19 AM   #1
2Xtreme
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Does this Holley idle linkage look correct?

Tried setting my idle speed last night and with the vac advance disconnected could not get the idle below 1000rpm.

Turned the idle screw all the way out until it was no longer touching. Wondering now if there is a linkage or spring hooked up incorrectly.

The following pics show how the linkage and springs are hooked up.









Thanks in advance!

2X

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Unread 05-24-2013, 07:36 AM   #2
Ivehad4
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One thing to check is the adjustment of the accelerator pump linkage. It could be juicing the carb. at idle if its set up too tight. My Holley is different but the instructions call to check it WOT with a feeler gage. For starters make sure its not engaged at all at idle condition.
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Unread 05-24-2013, 07:45 AM   #3
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Check you idle mixture screws. Adjust those first for a good mixture at idle then the speed screw.
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Unread 05-24-2013, 08:04 AM   #4
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Stupid question here: did you plug the vacuum line? Hey, it happens...


Shawn
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Unread 05-24-2013, 08:07 AM   #5
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Quote:
Originally Posted by swatson454 View Post
Stupid question here: did you plug the vacuum line? Hey, it happens...
Stupid me: Nope!
Plugged the vac advance at distributor.
Left vac line open.

No Bueno, huh?
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Unread 05-24-2013, 08:14 AM   #6
swatson454
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Quote:
Originally Posted by 2Xtreme View Post
Stupid me: Nope!
Plugged the vac advance at distributor.
Left vac line open.

No Bueno, huh?
Been there, done that

Plug the nipple at the carb or leave the line plugged into the carb and plug the dizzy end of the hose with a screw or something.


Shawn
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Unread 05-24-2013, 08:20 AM   #7
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>>PHEW<<

Simple fix!

Thanks!

2X
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Unread 05-24-2013, 09:15 AM   #8
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OK, just to be sure I am clear....

I have to have the (manifold) vacuum line disconnected from the distributor and the port on the distributor plugged.
AND
Plug the (manifold) vacuum line that came off of the distributor...

Correct?
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Unread 05-24-2013, 09:27 AM   #9
swatson454
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You don't have to plug the distributor, just the line.

I usually just pull the line off of the distributor and thread a screw into the end of it (the end of the hose that you pulled off of the distributor).

Savvy?
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Unread 05-24-2013, 09:29 AM   #10
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Savvy
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Unread 05-24-2013, 11:08 AM   #11
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Vacuum line's need to be hooked up to set idle. Check that your linkage has enough travel, secondary's are closing all the way, that the spacer and gaskets are not interfering with the throttle plates, and that the spacer and gaskets are fully sealing the base of the carb which if they are not would cause a vacuum leak and high idle.
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Unread 05-24-2013, 11:20 AM   #12
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Quote:
Originally Posted by Jack61 View Post
Check that your linkage has enough travel, secondary's are closing all the way,
2x and the adjustment screw is on the bottom of the flange (carb needs removed to get at it).
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Unread 05-24-2013, 02:57 PM   #13
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Quote:
Originally Posted by Jack61
Vacuum line's need to be hooked up to set idle......
Is t this the opposite of what Shawn said?
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Unread 05-24-2013, 04:11 PM   #14
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If you leave the vacuum advance line off especially when using manifold vacuum for the advance it will raise the idle by several hundred rpm's when it is reconnected. Only time to disconnect the vacuum advance line is when setting initial timing.
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Unread 05-24-2013, 04:28 PM   #15
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X2

Set timing with no vacuum and make all carb adjustments with everything hooked back up.


Shawn
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