02-28-2011, 10:40 PM | #1 |
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Location: Tucson AZ
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fuel problem?
So I need some help. Stats 350 with edelbrock 650 th400.. ok so my truck has a stumbling issue. When I brake the truck stumbles and dies. Also when im going about 50 it only stumbles. So I did a process of elimination. Changed fuel pump and filters...still happening. Rebuilt carb and checked for vacuum leak. The problem just started. Is there something in my gas tank causing this problem. Also checked fuel lines and all is well
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02-28-2011, 11:08 PM | #2 |
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Join Date: Sep 2008
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Re: fuel problem?
floats set properly? in the back of the edelbrock book it has a troubleshooting page with a list of possible problems/solutions
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02-28-2011, 11:13 PM | #3 |
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Re: fuel problem?
Do you have HEI? My plug wires were too close and arcing at times causing issues.
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02-28-2011, 11:25 PM | #4 |
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Join Date: Mar 2009
Location: Tucson AZ
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Re: fuel problem?
I measured both floats and they are good. Ill def check my wires. Seems to only happen when i Come to a stop or slowing down for a turn. I already spent to much money and am at my wits end
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02-28-2011, 11:25 PM | #5 |
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Location: Valley Springs, Ca
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Re: fuel problem?
just what I was thinking. go out at night and fire it up and take a look maybe a plug wire is arcing across some place.
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03-01-2011, 10:46 AM | #6 |
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Re: fuel problem?
There could be a problem with the fuel pickup in your gas tank. There is a sock on the fuel pickup tube that might be clogging up. It is easy to remove the sending unit/fuel pickup assembly to check.
People have found all kinds of odd stuff inside the gas tank. Have you checked the two rubber sections of the fuel line? One is under the cab and the other is on the suction side of the fuel pump.
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03-01-2011, 11:12 AM | #7 |
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Re: fuel problem?
Old time tuners will tell you that 90% of carb problems are igniton problems. Sounds like your advance is not working. Pull the cap and see if both the mech and vac advance are free. Also check the resistance in your plug wires.
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03-01-2011, 11:27 AM | #8 |
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Re: fuel problem?
Do you have power brakes?
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03-01-2011, 06:58 PM | #9 |
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Location: Tucson AZ
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Re: fuel problem?
So I changed the brake booster and a world of difference. when I would slam on my brakes it would not lock up the tires. Now it locks up and with the truck full forward tilt it stumbles for a second but does not die. I have not taken it on a long drive but all seems well. I just didnt think the booster being bad would cause it to stumble. Ill do some updates as i drive it this week
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