Fuel issue

Gemale Henderson

Asked by Jul 03, 2016 at 08:00 PM about the 1972 Chevrolet Impala

Question type: Maintenance & Repair

Just rebuilt my carburater, fuel pump and
filter. I disconnected the fuel hose that
connects the line from the tank to the fuel
pump, I put the hose in a gas can and my
car crank right up. There are no holes in
the line that comes from the tank, what
could be wrong?

6 Answers


Try blowing compressed air through the line that goes from the fuel pump back to the gas tank. There could be a blockage. You also have an ELS (Early EVAP system). Make sure you have the hoses/lines hooked up correctly at the charcoal canister as well as the fuel pump. One is for fuel vapor and one is for fuel. I'd recommend getting a copy of the original factory shop manual for your Impala. This will show you a diagram of the fuel system and how all the hoses/lines are supposed to be hooked up. Faxon Auto Literature in Riverside, California will probably have a reprint at a reasonable cost. They have a website. HTH. -Jim

Best Answer
Gemale Henderson

Will do sir

1 out of 1 people think this is helpful.
Gemale Henderson

Can the "Evap system"block the fuel from getting from the tank to the fuel line??

1 out of 1 people think this is helpful.
Gemale Henderson

And what size gallon air compressor do I need and at what psi?

1 out of 1 people think this is helpful.

Yes, if the fuel and vapor lines are mixed up you won't get any gasoline to the fuel pump. A compressor that can produce about 10 to 20 PSI should do it. Under normal operation the mechanical fuel pump only develops about 6 to 8 PSI. HTH. -Jim

Gemale Henderson

So I fixed the fuel issue! Thanks, but now as soon as I fixed the fuel problem the car crank and turned back off, I tried to star it again and it just clicked! I waited a few minutes it started again then turned back off. The battery is new and now it's just clicking, could it be the starter?

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