Bad Fuel Pump?

[adistler1]

I was leaking gasoline like a civ, so I ordered a new fuel pump. I had a friend who's a mechanic install it over the weekend. Everything started up fine, until i drove about 7 miles and it just puttered out and wouldn't restart. I checked all the hoses and they were fine, none were loose, and all of the plugs were on tight as well. I poured some gas into the carb and it started for a second, but died again. He said that I wasn't getting any suction, and he thought it was a bad pump. So we took it off yesterday and the pump looks fine, on the surface at least... we didn't take it apart. Do you think it might just be a bad pump? What are some other things it could be?

 

[IDave]

Plugged fuel filter. Perhaps the one in the carb. Maybe some junk from the pump. Replace the pump. Take the fuel line off the carb end and crank the engine and see if fuel comes out.

 

[adistler1]

Plugged fuel filter. Perhaps the one in the carb. Maybe some junk from the pump. Replace the pump. Take the fuel line off the carb end and crank the engine and see if fuel comes out.

there's definitely no fuel coming out of the hose when i disconnect the line. i've got another pump on it's way... let's hope this one fares better!

 

[Rice]

If there's crud coming from the tank you'll kill another pump. A filter before the pump and after the pump with frequent changes may be called for and find out if the tank is causing it.

 

[VTFJ40]

If there's crud coming from the tank you'll kill another pump. A filter before the pump and after the pump with frequent changes may be called for and find out if the tank is causing it.

What he said. Fuel pumps also aren't good at pumping air, so if it's parked up hill or on jack stands it has a hard time getting primed.

 

[Chef]

Like he said. Prime the lines and see if that helps. Junky aftermarket pump, or good toyota pump?

 

[Landpimp]

I have had good luck with the parts store fuel pumps, gotten 3 now all under $50 all are Aiski(or whatever it is) made in Japan parts, all work good.

Like he said. Prime the lines and see if that helps. Junky aftermarket pump, or good toyota pump?

 

[DocB]

Take the fuel line off the carb end and crank the engine and see if fuel comes out.

What he said.

 

[tobydog]

Trash in pump holds check valves in pump open. That and a little air and your out of business. If pump has screws that hold it togather take it apart and look so youll know what you are dealing with.

 

[e rock]

Did you check for spacers? Some pumps have spacers that must be used on the new pump as well. If you leave out a spacer, running the motor will move the pump arm too far and destroy the new diaphragm. And potentially dump gasoline into your oil pan.

Just a thought.

 

[3_puppies]

Did you check for spacers? Some pumps have spacers that must be used on the new pump as well. If you leave out a spacer, running the motor will move the pump arm too far and destroy the new diaphragm. And potentially dump gasoline into your oil pan.

Just a thought.

beat me to it

learned from experiance, my 79 2F had a spacer that came off with the pump, didn't notice it, installed new one ran for a few minutes and died. turned out I broke off the last inch or so of the rod, ended up in my oil pan. lucky for me I was taking that off next.

this was back in 1990, I know better know, felt very stupid at the time

 

[adistler1]

beat me to it

learned from experiance, my 79 2F had a spacer that came off with the pump, didn't notice it, installed new one ran for a few minutes and died. turned out I broke off the last inch or so of the rod, ended up in my oil pan. lucky for me I was taking that off next.

this was back in 1990, I know better know, felt very stupid at the time

That could be it. I didn't really see a spacer, but there were two things that looked like gaskets and we lost one of them, but he said we probably didn't need it. Perhaps we did. Although, when he removed the fuel pump he said it didn't look as if anything was broken...