Two Carb ?'s in one
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Posting Guru
Joined: Feb 2007
Posts: 1,735
Likes: 2
From: Wingo, Ky
Two Carb ?'s in one
Ill start out with my 74 F100 parts truck I have been playing around with while its still all together. Has a great engine in it. I got it running great. It has a 600cfm Edelbrock Performer manual choke on a 30 over 302.
It idles great and goes from idle to part throttle great. When at idle if I floor it it will almost die then catch up and go fine. It does not pop out of exhaust or carb. To rich?? I havent checked float height. It does blow black when reved up and the plugs are black. I figure maybe check float height and maybe decrease stroke on pump?
Second question. My 79 Bronco with a 600cfm manual choke Holley on 400 at idle to wide open throttle it will pop out of carb. To lean? Stock timing chain/gears causing variance in timing?
Thanks in advance.
It idles great and goes from idle to part throttle great. When at idle if I floor it it will almost die then catch up and go fine. It does not pop out of exhaust or carb. To rich?? I havent checked float height. It does blow black when reved up and the plugs are black. I figure maybe check float height and maybe decrease stroke on pump?
Second question. My 79 Bronco with a 600cfm manual choke Holley on 400 at idle to wide open throttle it will pop out of carb. To lean? Stock timing chain/gears causing variance in timing?
Thanks in advance.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,326
Likes: 48
From: Middle TN
The first one could be too rich or too lean but probably too lean. It's caused by the accelerator pump not set correctly or is bad. Look down in the throat and see how much fuel the pump is squirting. It should be a good strong stream.
The second is a lean condition. it can be the accelerator pump or starving somewhere in the fuel system.
The second is a lean condition. it can be the accelerator pump or starving somewhere in the fuel system.
