Fuel pump life
Thread Starter
Instructor
Joined: Mar 2003
Posts: 118
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From: Shrewsbury MA
Fuel pump life
Hi all
I'm getting the 94 6 speed ready for summer (85k on the clock). Every year I do PM on various systems. To date been through the clutch, water pump, Opti, u joints, brakes, ball joints. This year I am thinking fuel system. I assume the most commom problem if this system were to fail would be the fuel pump. Can anyone tell me the life of a fuel pump, or is there other things in this system I should look at.
Thanks for the help
I'm getting the 94 6 speed ready for summer (85k on the clock). Every year I do PM on various systems. To date been through the clutch, water pump, Opti, u joints, brakes, ball joints. This year I am thinking fuel system. I assume the most commom problem if this system were to fail would be the fuel pump. Can anyone tell me the life of a fuel pump, or is there other things in this system I should look at.
Thanks for the help
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Originally Posted by chb88
Hi all
This year I am thinking fuel system. I assume the most commom problem if this system were to fail would be the fuel pump. Can anyone tell me the life of a fuel pump, or is there other things in this system I should look at.Thanks for the help
This year I am thinking fuel system. I assume the most commom problem if this system were to fail would be the fuel pump. Can anyone tell me the life of a fuel pump, or is there other things in this system I should look at.Thanks for the help
Mine had 50k, and when I replaced it I noticed a 2# gain in press. at the fuel rail. Mine was sucking crud in the pump with the sock being ruined.
Race Director
Joined: Sep 2005
Posts: 13,269
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From: Sharpsburg Georgia
GA Events Coordinator
Originally Posted by mseven
I would first go with filter, then check pressure at the rail and go from there. See how well it is holding pressure at the line etc. The "sock" on the pump itself may be deteriorated. When I took mine apart it was hanging on by a few threads. According to the Delco instructions if the sock is damaged, it is recommended to then change the pump.
Mine had 50k, and when I replaced it I noticed a 2# gain in press. at the fuel rail. Mine was sucking crud in the pump with the sock being ruined.
Mine had 50k, and when I replaced it I noticed a 2# gain in press. at the fuel rail. Mine was sucking crud in the pump with the sock being ruined.
As far as the life of the pump, it depends on many different factors.
How much was the pump run uncovered. (not submerged in fuel for cooling)
how much restriction did the pump see from the fuel filter. (was the filter changed regularly)
Quality of the fuel used.
Operating environment. (hot or cold climate)
What was the quality of the pump to start with.
I am sure there are other factors as well, the bottom line is sometimes they will give you a warning that they are on there way out and sometimes they just quit.
Greg N
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by mseven
I would first go with filter, then check pressure at the rail and go from there. See how well it is holding pressure at the line etc. The "sock" on the pump itself may be deteriorated. When I took mine apart it was hanging on by a few threads. According to the Delco instructions if the sock is damaged, it is recommended to then change the pump.
Mine had 50k, and when I replaced it I noticed a 2# gain in press. at the fuel rail. Mine was sucking crud in the pump with the sock being ruined.
Mine had 50k, and when I replaced it I noticed a 2# gain in press. at the fuel rail. Mine was sucking crud in the pump with the sock being ruined.
There are many varibles that could come into play here. Another is, has the filter been changed regularly on the car? A restricted filter will make the pump work harder and shorten it's life. I changed my pump at 115K miles and it was still performing fine. I changed it because of the miles and I because I got a nearly new GM one from a forum friend who had upgraded to a high performance one.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
in-tank gm pumps last 10 years or 100k miles, whichever comes first...after that make sure you take your cell phone along
filter should be changed every year....after about 4-5 years the super-thin aluminum shells corrode thru, gas sprays out...
filter should be changed every year....after about 4-5 years the super-thin aluminum shells corrode thru, gas sprays out...
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by chb88
Thanks for the replys. A new fuel pump is going in, with the wire harness and strainer. Better safe than having the day ruined by a cheap item such as this.
Thanks again.
Thanks again.
A new gasket for the flange.
New high pressure fuel hose for fuel injected cars-about 4' of it and it's about $4.00 a foot, they'll never be a better time to change it.
Replace your fuel pump relay at the same time, these wear out too.
It's really a pretty simple job on these cars.
