427 TI Problems

[Mark K.]

Re: 427 TI Problems

Fuel is 4 months and I should double check the idle mixture screws. Thanks for the suggestions.

Check to see what your voltage output is on your dash at low rpm. I was finding that there was low voltage just when my engine would stall. Readjusting it fixed the problem.

[William H.]

Re: 427 TI Problems

Thanks, Mark. Appreciate the expertise and will do.

[Timothy B.]

Re: 427 TI Problems

William,

I agree with Dick, you can use aerosol to find the leak or unlit propane gas bottle. Problem with aerosol is that everything you spray will remove paint so be careful. Try to plug the power brake vacuum take off and the vacuum to the vacuum tank to isolate the engine as the problem.

If the car is warm at curb (low) idle, and the choke needs to be closed to idle the engine there is a good chance it's a leak with one of the holleys. Best way IMO to tune troubleshoot tri power is to remove and block off end carburetors and tune primary carburetor first then install end carbs and tune for WOT A/F ratio. If the camshaft and compression is stock the factory jets, power valve etc will get you a good running car. I think the end carbs have a metering plate instead of metering block so lots of places for vacuum and gas leaks.

What was done to the carburetors when you stste they are set to factory settings..

[William H.]

Re: 427 TI Problems

Thanks, Dick. I'm going to give that a try tomorrow. Appreciate your expertise. Bill

[Dick W.]

Re: 427 TI Problems

William,

I agree with Dick, you can use aerosol to find the leak or unlit propane gas bottle. Problem with aerosol is that everything you spray will remove paint so be careful. Try to plug the power brake vacuum take off and the vacuum to the vacuum tank to isolate the engine as the problem.

If the car is warm at curb (low) idle, and the choke needs to be closed to idle the engine there is a good chance it's a leak with one of the holleys. Best way IMO to tune troubleshoot tri power is to remove and block off end carburetors and tune primary carburetor first then install end carbs and tune for WOT A/F ratio. If the camshaft and compression is stock the factory jets, power valve etc will get you a good running car. I think the end carbs have a metering plate instead of metering block so lots of places for vacuum and gas leaks.

What was done to the carburetors when you stste they are set to factory settings..

Tim I use propane, but am hesitant to tell others to do it. You have a source of ignition and a very flammable gase in a small area. I just do not want the liability if someone gets hurt and they tell their lawyer old Dick Whittington told me that was the way to do it.