idle issues

[p24-1953]

Today I noticed that the warmer the temp guage read, the faster my idle increased. I have the stock carb and intake with a man. choke. What could cause this? what is the reccomended steps to set the idle speed properly?

[Don Coatney]

I recommend you lubricate your linkage and check your throttle return spring. I had to add a heavier throttle return spring on my engine to get it to idle correctly.

In the old days one of the tricks shoddy mechanics would pull was to install a throttle return spring that offered less resistance. The car owner would then beleive that his or her car was running a lot better because it did not require as much pressure on the accelerator pedal to get up to speed.

[p24-1953]

so don your thinking the heat is causing the spring to loose tension and increase the idle? so when its high i should be able to pull the throtle back and lower the idle to test that idea correct?

[greg g]

more likely stiction in the linkage agrivated by high underhood temps.

[Niel Hoback]

Greg, I never heard the word "stiction" before, but its perfect!

[greg g]

Also check your high idle cam on the throttle pivot in the carb base to make sure it is being pulled off when the choke opens.

[Don Coatney]

so don your thinking the heat is causing the spring to loose tension and increase the idle? so when its high i should be able to pull the throtle back and lower the idle to test that idea correct?

Did you lubricate your linkage?

[p24-1953]

did today, resest the idle speed and idle mixture according to the manual and it was pulling a good vaccum. we will see how it does in the next few days.