Hollonator

I have a Edelbrock 650cfm manual choke on a 408 stroker that is used as a daily driver. The size of the carb should be plenty for the intended use, but the carb itself is a POS. Almost everytime you start it, it floods. It always loads up while it is idling and will die after bout 30 minutes of idling. No matter how we adjust this carb it still acts the same. Adjusting it will make a difference today, but tomorrow it will act the same. Readjustment today will make a difference, but tomorrow it will act the same. I am really tempted to takin the carb off and throwin it in the lake to see how well it can swim, since it can't perform its duties of supplying my engine. Any suggestions? Thanks.

1966sportfury

So I take it you swapped needles, jets. How are the floats? Sticking, have a hole in them?

Hollonator

i didnt swap anything, the carb is less than a year old and exactly how it was out of the box. it was put on the truck just before i bought it and i cleaned it when i bought the truck cause i didnt know it was brand new...so it is new and not modified and cleaned...i dont see any problems here but for some reason it still has one

1966sportfury

i would try to re-adjust the floats. also try a bigger needle and or smaller jets. "strip kits" are about 45 bucks and comes with all the needles and jets you will need. usually edel,s come pretty close to the c.i.d it was intended for but not all the time.

Hollonator

i dont know, i been thinkin bout switchin over to a holley...they have never given me any trouble, this is my first non-holley carb

Commando

Is there too much fuel pressure?

scotts74birds

X2. You could be blowing the needle off the seat

volaredon

that Holley will be more trouble than any Edelbrock ever was.

scotts74birds

My Cheby Camaro factory mech fuel pump put out about 12 psi. Great for the Rochester it had, not so good for the Holley. Can't remember the Holley specs off hand, but I think they like around 7-8 psi. Please give us feedback if this is it, and it works for you. It makes this a better site for everyone.

Hollonator

well im still runnin a factory mechanical fuel pump so i dont see how the fuel pressure can be too high...i dont know, never had no trouble out of a holley, maybe certain carbs work better for certain people and how they drive i dont know

scotts74birds

From the Eddy FAQ site: Make sure your fuel pressure does not exceed 6.0 psi. Optimum pressure is 5.5 psi. From what I've read on the web, Holleys like 4-8 psi. Rent a free pressure tester from autozone and lets know for SURE.