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Old 11-07-2002, 11:40 AM
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Post Fuel/Carb problem

I have a 77 Buick LeSabre with a 350/4BBL. The problem is after the car sits for more than two days the car won't start. It turns over, has spark but no fuel when I disconnect the line. I replaced the fuel pump in July when stranded in Denver and got the car started. In september I took a trip to Alabama and the same problem came back but I got it started by pouring fuel into the carb. I thought the carb might be leaking down and replaced in Alabama but I'm back in Wyoming and problem still exists. The vacuum is good, timing is great, but no fuel comes out of the pump after the car sits for more than two days. Help!!
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Old 11-07-2002, 12:54 PM
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You've bought a new fuel pump and a new carb? Are there any puddles under the car? ie) Is the gas line leaking anywhere under the car or near the gas tank?

If there are no puddles then the only other option is that the gas is going back into the tank, draining the lines of the fuel.

Sounds very strange....your float bowls in your carb should hold enough gas to at least start the car, even if the lines were empty. Now, if your float bowls were leaking then that would explain no gas after 2 days. But....if you just bought a new carb then that should have fixed it.


Greg.
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Old 11-07-2002, 01:18 PM
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Yes, the fuel pump is only a few months old as I thought it was that when it wouldn't start in Denver and I took off the fuel line to the carb and no fuel came out when cranking. I replaced the carb when I noticed no fuel spraying after the car sat for a few days when the throttle was acutated. The fuel problem was also present with no fuel coming out the line until I poured gas into the carb and the engine ran at sufficient RPMs to draw fuel. The new carb does have a spray after sitting for a few days but peters out quickly like the bowl is half empty. The only option I have at that point is to pour some gas down the carb and it fires right up. The plugs are clean and it seems like it's running real lean as the idle mixture screws are about 4 turns out.
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Old 11-07-2002, 04:40 PM
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If your lines are all good sounds like the pump went south. Even though it's not that old it could still be bad. If I had a dollar for every premature starter, alternator, water pump, etc., etc. failure I've seen I'd be retired already.
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Old 11-07-2002, 05:28 PM
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Ditto DM. Recheck your "new" pump.
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