I have a 92 305TBI that killed a fuel pump. I replaced it with a new pump for a 350 Z28. Well 3 pumps later and I am getting sick of it. The fuel filter is only 3 or 4 years old with les then 20k on it.

Did I make a mistake by trying to upgrade?

Does the 350 pump have more pressure then the 305 and are the fuel lines the same size on a 305 compared to a 350?

HELP ME!!!!!

 

305 and 350 fuel pumps and lines are identical.

Did you put on a new pickup screen? I would assume a new fuel filter to be part of a pump change, no matter how new or how few miles it had on it.

 

The screen was new, the filter I fuigured would still be good. Guess that's my first option. Hopefully I didn't damage the pump all ready.

 

Did you put in a TPI pump? If you did, it's a much higher pressure pump. Thats not your problem though. Check your voltage at the pump. undersized wires, poor connections, bad grounds, etc can all lead to a voltage drop. Ohm's law says that when volts drop, amps go up, and more amps through the pump, it gets hot, and it burns out. I've personally experienced this, and you could see the melted solder on teh top of teh pump. Running new thicker wires solved the problem.

Also, are you running your tank low? The pump uses the fuel to help cool it. If you routinly run the tank low, the pump gets hot, and over time will fail.