michalbugno2006

When I bought the car it ran pretty bad, especialy for a new crate 330/350. I looked at the carb and the air/fuel idle screws were at full lean to the point where i could pull the screws out. It is a 2 corner idle adjustment and electric choke. I took the screws and screwed them in all the way then out 1.5 turns (as holley reccomends). Now the engine won't start, so I upped the idle speed, maxed it out and still won't start.



Any Ideas?

Thanks,
Michal

MelWff

Something is a little backwards here. Unless you have a carb where the screws work in reverse of what is normal, as you turn the screw clockwise you are leaning out the mixture, all the way out like you descibe is full rich not counting the vacuum leak you would get with the screws falling out as you described. Try turning the screws a little further out than 1.5 try 2.5 and see if it starts but that doesnt sound like something that would prevent the car from starting. It would effect the idle once it started.

michalbugno2006

You're correct, sorry I wasn't paying attention:o.

I tried 3 turns and the engine turns over starts kinda and stalls out. It will only start at close to full rich.

roscobbc

Get it running first and fully warmed-up before adjusting

michalbugno2006

That's what I did but after adjustment wuth vacuum guage it won't start again.

This is making me want to trash the holley even more... Bad mileage... Used to edelbrok...

baxsom

float level, timing, vacuum leaks?

idle setting, secondary idle setting?

michalbugno2006

I can't check most of those without starting.... vacuum seems fine lights went up and down in 1 seccond before i played with idle mixture and after playing with idle mixture she won't start. Anyone wanna trade?

toddalin

If the engine won't start at all, even after you pump a bunch of gas into it, I don't think your problem is the idle screws. Something else probably got messed up.

Solid LT1

What is the part number of your Holley, I have a Edelbrock I could trade you. Email zeohsix2002@yahoo.com

MelWff

Did you check the float levels you could be drowning the engine if they are way too high or the needle is stuck in open position.

michalbugno2006

Wow... Checked the number and it turns out its a 670cfm Street Avenger. http://www.summitracing.com/parts/HLY-0-80670/

Previous owner didn't know much about his carb....
I'll try adjusting the float level next.

Budman68

Doesn't sound like the problem. Are you getting fuel? Are the squirtes working. Step back and look at everything. Spark plug wire switched.

baxsom

there is a huge difference between a street avenger and a double pumper.

sounds like it is time for a rebuild.
holley kits are cheap and it only takes maybe an hour to take it off, strip and clean, reassembly, and reinstall. reset everything back to factory spec and start over.



there may be so much gunk in the passages that it needs to be fully open just to let enough fuel go through.
definitely something is up with the idle circuit.