Cant adjust idle down

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Oct 22, 2015 | 02:06 AM

#21

OMF

Melting Slicks

Joined: Jul 2006

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From: Salmon Arm, BC

Reread post # 3.....it's that round canister at the front left of the carb. If it's touching the linkage thats likely your problem.

Oct 22, 2015 | 12:32 PM

#22

MelWff

Race Director

Joined: May 2006

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Stock idle speed

Quote:

Originally Posted by erieaddict

A quick update. I took the throttle cable off and no difference. I have managed to get the idle down to 550, but I am still not hitting against the idle screw when this low. I adjusted the idle at 700 rpms. I appreciate all the great tips and ideas.

Are you aware that the stock idle speed for a 1973 4 speed is 900 rpm?

Oct 22, 2015 | 01:28 PM

#23

erieaddict

Thread Starter

Racer

Joined: Jun 2012

Posts: 283

Likes: 24

From: Berlin Township oh

Yes, I am aware of that. Thank you. Is your 350, 4 speed car adjusted to 900rpms? Just seems kind of high doesn't it?

Oct 22, 2015 | 03:55 PM

#24

MelWff

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Actually it is, but I have a different 350 4 speed engine, it's 70 LT-1 based. You are using the solenoid to establish your idle speed?

Oct 22, 2015 | 08:09 PM

#25

erieaddict

Thread Starter

Racer

Joined: Jun 2012

Posts: 283

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From: Berlin Township oh

no not using the solenoid, the throttle stop has not contacted the solenoid in the 3 years I have owned the car. Solenoid is a good 1/4 away from the stop at idle.

Oct 23, 2015 | 10:23 AM

#26

MelWff

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have you checked if the solenoid is getting power?
if it is and the solenoid doesn't extend it is bad and needs to be replaced.

Oct 23, 2015 | 11:03 AM

#27

erieaddict

Thread Starter

Racer

Joined: Jun 2012

Posts: 283

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From: Berlin Township oh

MelWff, although I appreciate your feedback, in the previous post I posted to answer your question
"no, not using the solenoid, the throttle stop has not contacted the solenoid in the 3 years since I have owned the car. Solenoid is a good 1/4 away from the stop at idle."
Why would I use or repair the solenoid if my car is not using it?
My carb doesn't hit the idle screw at idle either. That is the main issue I am trying to resolve.

Oct 23, 2015 | 01:09 PM

#28

jnb5101

Le Mans Master

Joined: Jul 2006

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From: charlotte north carolina

Judging by the appearance of the carb, it has been rebuilt at some time. It's possible that the primary butterflies were not positioned correctly when reattached to the shaft. There might be interference preventing the shaft from rotating to a full "idle" position and causing your non-contact problem. Look down into carb and examine the position of the butterflies.