Car will not restart. Fuel on Carb Blades.

[GupsTateS]

I have a 1968 Dart with a 340, the carb's been replaced with an aftermarket holley with manual choke. The car starts up fine if pull the choke. It seems to be forever before I can close it without the car dying. If for some reason I close it too soon the car will not start for quite a while after. I do notice fuel on the blades of the carb immediately after shutting down.

What should I adjust to solve this?

Thanks

 

[ramcharger]

First check for vacuum leaks, if everything checks out OK, you need to adjust your idle mixture screws for highest vacuum at idle when warm.

Is this carb new or used? How does it run once warm?

 

[1wild&crazyguy]

Check the fuel level,and you can adjust the idle to get the highest rpm, once you go past that, the rpm will drop again.

If it's a holley and size/tune matched for the engine combo, you should only need 3/4 to 'maybe' 1 turn out on all idle screws to get it right.

 

[GupsTateS]

The carb came with the car when I bought it, it's pretty new. It's a 3310-11 Holley which seems big for my engine, it's a 750 carb. The primary Jets are 70 and the secondaries are 76.

Thanks for the info on the idle screw. Do you think it's more likely running rich or lean?

The car did run like crap when it was warm, there was an issue with the distributor that I just sorted out. That gave me a chance to notice this, haha. Gotta love these cars, it is fun though.

 

[1wild&crazyguy]

well with fuel all over the blades, did you notice fuel drops coming from the boosters? they hang over the venturi's/barrels.

See the fuel comes out of them metered by main jetting/air bleeds and is mixed up by the fast moving [accelerated air] that flys through them, But when the needle & seat isn't closing do to too high float setting causing unecessary pressure, it'll push unneeded fuel out of the boosters, and even drip when shut off do to residual fuel bowl pressure.

 

[green1]

Pull the fuel line off, and crank it. if you get good fuel, and still need the choke-rebuild the carb.

 

[ramcharger]

The carb came with the car when I bought it, it's pretty new. It's a 3310-11 Holley which seems big for my engine, it's a 750 carb. The primary Jets are 70 and the secondaries are 76.

Thanks for the info on the idle screw. Do you think it's more likely running rich or lean?

The car did run like crap when it was warm, there was an issue with the distributor that I just sorted out. That gave me a chance to notice this, haha. Gotta love these cars, it is fun though.

It's running lean. There are two screws, one on each side for the idle mixture adjustment.