re: 2 weber Q's...

[POP3Y3]

found out why it wouldn't idle.

bad vacuum advance. i disconnected

the hose and let it hang. idles great.

also found the cold start idle screw.

there a screw between the electric choke

and the body of the carb. it is different than

older 32/36's as i had my old one to compare

it to.

[Guest Anonymous]

"Cold start screw" how is it different?

The fast idle adjustment screw is the similar, if not identical in the electric choke and water heated choke assemblies. If you had a manual choke with pull cable, it would obviously be different.

Same fast idle cams, etc. Step away from the carb cleaner and starting fluid!

[POP3Y3]

"Cold start screw" how is it different?

The fast idle adjustment screw is the similar, if not identical in the electric choke and water heated choke assemblies. If you had a manual choke with pull cable, it would obviously be different.

Same fast idle cams, etc. Step away from the carb cleaner and starting fluid!

there is a screw to adjust for the fast idle

cam when choke is engaged.

it was idling about 2500 and i backed it down

to 1500 (not the idle speed on the back side of carb).

end result, i fixed my problem

step away from your keyboard, dipstick

[Guest Anonymous]

I am glad you fixed your issue. I was just trying to figure out what is different between carbs you are comparing.

Maybe I should have said step away from the little kings and chili! lol

[wohleb]

Was the problem starting the car? Or maintaining an constant rpm?

I put a new weber on our 75 and have reset the idels (two screws) and it still has a cold start problem.

[POP3Y3]

the problem was rpm's were too high. before you start the car depress the gas pedal all the way to the floor once. that will close choke and the engine should idle at a higher rpm (around 1500) when it starts. then when the engine reaches temp you depress gas again and the rpm drops to normal (800-900). there is an adjustment screw for the fast idle cam. it should be located where i stated above depending on which carb you are using.