440 Help Needed

Yellow Duster said
After watching the video of this engine idling, I'm curious if the timing is stable. If the distributor has light springs, the advance could be bouncing and that would make the idle hunt up and down. A quick check with a timing light would either prove that condition or rule it out.

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The distributor does have lighter springs. I am going to try and remove the distributor next time I am home and make sure things are together properly on it.

440 Mike said
Sure seems like a vacuum leak.

Do you have a sure fire way to find this out? I tried the propane and carb cleaner method. What areas would you suggest? I tried all connections to the intake manifold and carb.

Bakerlite said
Diagnosis by keyboard is virtually always a teeth pulling exercise..

it really is, but as of now I have no other way of getting help on this.