I have a holley avenger 670cfm and for some reason anytime a punch it to wot and let it go the secondarys stay cracked open and make the revs about 2000rpm. As long as i dont go wot they work fine. i replaced the vacuum secondary diaphram grease and checked all the linkage and been workin on it for 2 days straight took the carb of 3 times checked about everything changed the gasket checked all the vacuum hoses and get nothing. Im stumped i cant punch it or i have to turn the car off and start it again so i dont know what it is???????

 

Either the secondary throttle shafts or blades are dirty; or the throttle blades aren't properly centered in the bores.

 

Yea they were kind of dirty but i cleaned them and the blades go back in the bore smoothly but just curious jow can they get uncentered and if you have anymore suggestions i could really use them.

 

Mostly they get uncentered when the big nut that's supposed to go between the driver's seat and the steering wheel gets loose and backs off and bangs around in places where it's not supposed to be. They hardly ever get out of wack other than that.

 

Well than thats not the problem.

 

That's good I guess.