carb issues
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Joined: Apr 2010
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carb issues
I just replaced the carb on my truck an now it idles and runs really rough. Ive tried everything i can think of and nothing has worked. Any Ideas?
p.s its an edlebrock 600 cfm carb on a 390 any advice is much appreciated thanks
p.s its an edlebrock 600 cfm carb on a 390 any advice is much appreciated thanks
Fleet Mechanic
Joined: May 2001
Posts: 1,396
Likes: 4
From: Cupertino
It is possible that you are drawing air through a ruptured diaphram in the distributor unit. The Toothless Jake way to check for a problem is to pull the rubber line that goes to the distributor at the carburetor and suck on it. If what you feel is like sucking air through a straw, replace the diaphram. The unit should hold vacuum when you suck.
It sounds like you might be drawing air someplace. Are you sure that there are no open ports on the carb?
You can get a can of starting fluid and spray around your vacuum connections and base gasket. If the engine flares, you have a leak.
Be suspicious of any rubber connections to the carb or manifold. It sounds to me like you are drawing air someplace.
Have you found the idle mixture screws at the base of the carb and do you know how to adjust them?
It sounds like you might be drawing air someplace. Are you sure that there are no open ports on the carb?
You can get a can of starting fluid and spray around your vacuum connections and base gasket. If the engine flares, you have a leak.
Be suspicious of any rubber connections to the carb or manifold. It sounds to me like you are drawing air someplace.
Have you found the idle mixture screws at the base of the carb and do you know how to adjust them?
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