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-   -   fuel pump over heating = bad pump? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/fuel-pump-over-heating-%3D-bad-pump-778751/)

rayadas 08-11-08 11:39 PM

fuel pump over heating = bad pump?
 
i have a mallory fuel pump that is mounted behind the driverside bin. unfortunately i did run out of gas so the pump was running dry for a littl while. after that happened i've had problems on long drives where i will have to turn the car off, so the fuel pump can cool off. seeing as how the fuel pump isnt that cheap i figured i'd ask you guys what you think is the problem. if you need any more info let me know, thanks

Rx-7Doctor 08-11-08 11:43 PM

Is the pump designed to pull fuel?

Terrh 08-12-08 01:16 AM

possibly a plugged feed line or strainer in the tank, too.

fuel should be more than capable of cooling the pump, assuming it's getting it.

rayadas 08-15-08 10:03 PM

i have a brand new fuel system. new tank, 3/8 in. line, dual fuel filter setup, mallory fuel pressure regulator, and i've had one mechanic who specializes in rx7s said i should never have to worry about my fuel system, so i'm leaning towards a bad pump becuase of me running too long on empty. i'm not sure if i really want to wait to see if it really is bad, cuz then im stranded. new fuel pump not too expensive, but if u got any other suggestions let me know

elwood 08-15-08 11:14 PM

Ask the Experts
 

Originally Posted by rayadas (Post 8469138)
i have a brand new fuel system. new tank, 3/8 in. line, dual fuel filter setup, mallory fuel pressure regulator, and i've had one mechanic who specializes in rx7s said i should never have to worry about my fuel system, so i'm leaning towards a bad pump becuase of me running too long on empty. i'm not sure if i really want to wait to see if it really is bad, cuz then im stranded. new fuel pump not too expensive, but if u got any other suggestions let me know

If your pump is like the one I used to have, the fuel doesn't cool it. The pump motor is above the impeller, so I don't think that running it dry would fry the motor. But why don't you ask the experts at Mallory instead of nephytes like me? They have a very good tech line.

Dave Meyers 08-16-08 08:11 AM

How does the car behave, in other words, what are the symptoms, and how do you know when it is time to shut 'er down on long drives?


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