Fastguy

My 75 has a 454 from a 74 Suburban in it. I am running an Edelbrock cam, Torker II intake, and Performer carb as well as a stock 75 HEI distributor. I am running Hooker SC's and 2 1/2 true duals. At idle, the car loads up and the plugs are wet. The carb is right out of the box and has never been jetted. I am running R44TX plugs, is this causing me a problem or do I need to re-jet?

MassVette

Sounds like timing or carb; is it the AFB style carb? what CFM is the carb? did you try setting carb mixture with a vacuum gauge? The correct mixture adjustments will show the most vacuum. Are you using manifold or ported vacuum? If ported, try manifold (direct) vacuum. I run 12-14 degrees initial advance, and use manifold vacuum for the advance mechanism. The plugs range seems plenty hot enough.
:chevy :chevy

Fastguy

I checked and re-checked my timing and tried ported and manifold vacuum. I am wondering if I am having a float issue. The carb sat for a while and there is an excelent chance that the the gas dried up and left a residue that is affecting the needle and seat.

It IS the AFB style which makes it a PITA to check float height unlike a Holley.


[Modified by Fastguy, 12:19 PM 2/20/2002]

MassVette

These carbs can occasionaly have problems with the plastic shaft accelerator pumps, along with stuck needles and seats. When you remove the top, be careful not to lift too quickly. I broke the gasket in one of mine by being careless.
How long did the carb sit around? These are usually VERY good carbs. Maybe a rebuild kit would help...??