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#2414368 - 12/06/17 05:22 PM Edelbrock idles too fast
JohnH Offline
mopar

Registered: 11/03/03
Posts: 519
Loc: WV
440 engine,, EB carb... Car goes 35 mph at idle,, I did everything I know to do to slow it down... Even tighten return springs,, And it's not the throttle cable set back too far,, I can pull the throttle back by hand and it will go to 750 rpm...Not the choke,, not the idle screw, not the choke,, not the cold idle cam,,, but when I shove the accelerator down, same problem,, And it seems as if the 4 barrel never kicks in.. A friend of mine has a 65 chevy, 350,,, has the same problem.. any ideas? Thanks...

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#2414378 - 12/06/17 05:46 PM Re: Edelbrock idles too fast [Re: JohnH]
cmansell Offline
mopar

Registered: 02/13/05
Posts: 460
If you have it hooked to full vaccumn that can cause high idle, move to ported and see if that helps.

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#2414380 - 12/06/17 05:56 PM Re: Edelbrock idles too fast [Re: JohnH]
feets Offline
Senior Management

Registered: 01/20/03
Posts: 27229
Loc: Irving, TX
Check the vacuum port as suggested above.

If you have the mixtures/jetting off it is possible to adjust the throttle blades high enough to uncover too much of the transition slot in the primary venturis. That will lead to idle issues.



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#2414393 - 12/06/17 06:32 PM Re: Edelbrock idles too fast [Re: cmansell]
JohnH Offline
mopar

Registered: 11/03/03
Posts: 519
Loc: WV
I have vacuum connected to power brake booster,, is that what you mean full vac?

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#2414394 - 12/06/17 06:33 PM Re: Edelbrock idles too fast [Re: cmansell]
JohnH Offline
mopar

Registered: 11/03/03
Posts: 519
Loc: WV
Full vac off intake that is,,,

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#2414410 - 12/06/17 06:56 PM Re: Edelbrock idles too fast [Re: JohnH]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 34167
Loc: Lincoln Nebraska
Quote:
I can pull the throttle back by hand and it will go to 750 rpm. but when I shove the accelerator down, same problem,, And it seems as if the 4 barrel never kicks in.
(1) throttle blades sticking (2) may need to lighten the counterweights (Then you can add weight back on to fine tune as needed)
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#2414432 - 12/06/17 07:18 PM Re: Edelbrock idles too fast [Re: JohnH]
71birdJ68 Offline
master

Registered: 02/09/12
Posts: 3972
Loc: Morristown Tn.
They are talking about the two vacuum ports on the front of the carbs, where the distributor hose goes.

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#2414478 - 12/06/17 08:44 PM Re: Edelbrock idles too fast [Re: JohnH]
FrankenScamp Offline
master

Registered: 05/08/03
Posts: 4179
Loc: Medford OR

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#2414582 - 12/07/17 05:21 AM Re: Edelbrock idles too fast [Re: JohnH]
dvw Offline
master

Registered: 03/16/06
Posts: 7177
Loc: MI, usa
Most likely the fast idle cam is sticking. This will lock out the secondary's as well. I have seen loose throttle blade screws cause this condition also. Look here, Page 8. If you have no choke, this linkage must be wired open.

https://www.google.com/search?q=edelbroc...sourceid=chrome

Doug

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#2415269 - 12/08/17 12:38 PM Re: Edelbrock idles too fast [Re: JohnH]
second 70 Offline


Registered: 02/04/14
Posts: 421
Loc: central il.
John I had one where the accelerator pump linkage would hang up. I fixed it by reversing the S looking clamp that inserts in the accelerator pump and arm. Easy to check just take off the pump squirt and see if it goes away.

Took forever to find it. You could run the throttle by hand and everything was fine but the minute you drove it it would stick. Rev it and it would go back to idle. push throttle and stuck again.

This was on a two four barrel hemi with chokes removed and only one carb was sticking.

Mike

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#2415498 - 12/08/17 08:27 PM Re: Edelbrock idles too fast [Re: JohnH]
ScottSmith_Harms Offline
Mr Wizzard

Registered: 01/20/03
Posts: 42129
Loc: Spokane Washington
Are you sure your engine (or your accessories, vacuum advance, PB booster, vacuum hoses, intake gasket, etc.) does not have a vacuum leak? That's the main reason you cant reduce the idle speed.

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#2433068 - 01/11/18 07:02 PM Re: Edelbrock idles too fast [Re: JohnH]
JohnH Offline
mopar

Registered: 11/03/03
Posts: 519
Loc: WV
Since it warmed up enough in the garage to figure out my engine idling to fast, I found the problem... It was my kick down lever where it attached to the carb binding somewhat.. I made some adjustments... All is well... Thanks for everyone's help...

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#2433562 - 01/12/18 04:29 PM Re: Edelbrock idles too fast [Re: JohnH]
feets Offline
Senior Management

Registered: 01/20/03
Posts: 27229
Loc: Irving, TX
Good to know it was an easy fix.

Thanks for filling us in.

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#2433643 - 01/12/18 07:49 PM Re: Edelbrock idles too fast [Re: feets]
bboogieart Offline
master

Registered: 01/12/08
Posts: 3575
Loc: Lost and Spaced
Originally Posted By feets
Good to know it was an easy fix.

Thanks for filling us in.


Agreed.
And now I know I should check my "s" linkage on the Carter I rebuilt, to make sure it is properly installed. up
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