Idle drops after WOT
Thread Starter
On The Tree
Joined: Aug 2008
Posts: 109
Likes: 2
From: St. Charles, MO
Idle drops after WOT I have a Quick Fuel 750 double pumper on a heads, cam, and intake 355. I had the carburetor rebuilt recently and have been working through the issues to get it to run perfectly. I have reached that point where I think I have everything adjusted correctly, it will idle great, throttle response is snappy, doesn't stumble at initial throttle, pulls hard at WOT, but after I go WOT in gear or in neutral, the car will idle about 250 rpm lower than what I have it set at and it does not recover. I have let the car sit for a couple hours and started it again without touching anything and idles where it should even after getting past 160-180 degrees. The engine is plenty warm when this happens and never did this before the rebuild. There is no choke on this carburetor. I can go about half throttle and it will return to it's normal idle but when I go WOT and those secondaries open is when the issue happens. I called Quick Fuel on this and they were stumped.
Anyone have any tips or things to adjust on this? I have looked around and found virtually nothing.
Anyone have any tips or things to adjust on this? I have looked around and found virtually nothing.
Thread Starter
On The Tree
Joined: Aug 2008
Posts: 109
Likes: 2
From: St. Charles, MO
Thanks for the advice guys. I will check and see if there is some reason the secondaries aren't completely going back to their original position. I will say I didn't notice anything getting hung up when I was adjusting the accelerator pumps and had to hold the carburetor wide open several times but then again, I wasn't looking at the blades. The throttle cable is nice and straight but another good idea I didn't think of.
Thread Starter
On The Tree
Joined: Aug 2008
Posts: 109
Likes: 2
From: St. Charles, MO
You win! I finally got a chance to get back out in the garage last night and sure enough my throttle cable bracket had shifted over to the side a bit. I put the bracket back where it should and tightened it down some more. I took the car out and did a couple WOT pulls and the idle went right back to where it should. Thank you again!
