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Fuel Pump Longevity #4523954
09/23/17 10:58 AM
09/23/17 10:58 AM
Joined: Sep 2005
Posts: 5,920
MIchigan
Warstud Offline OP
Warstud  Offline OP
Joined: Sep 2005
Posts: 5,920
MIchigan
Does an internal fuel filter provide longer life to a fuel pump compared to an external?

Re: Fuel Pump Longevity [Re: Warstud] #4523961
09/23/17 11:11 AM
09/23/17 11:11 AM
Joined: Mar 2012
Posts: 1,374
San Antonio, TX
E150GT Offline
E150GT  Offline
Joined: Mar 2012
Posts: 1,374
San Antonio, TX
probably doesn't make a difference. Most cars only have the sock and they last pretty long.

Last edited by E150GT; 09/23/17 11:12 AM.

1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: Fuel Pump Longevity [Re: Warstud] #4523978
09/23/17 11:51 AM
09/23/17 11:51 AM
Joined: Oct 2009
Posts: 3,947
Ohio
L_Sludger Offline
L_Sludger  Offline
Joined: Oct 2009
Posts: 3,947
Ohio
I say yes because I've had Toyotas and Lexus vehicles with over 300,000 miles on the original fuel pump and the fuel pumps were still perfect. Anything external is going to be eaten by road salt.


too many cars and oil combinations to list in 150 characters or less
Re: Fuel Pump Longevity [Re: L_Sludger] #4523991
09/23/17 12:01 PM
09/23/17 12:01 PM
Joined: Sep 2005
Posts: 5,920
MIchigan
Warstud Offline OP
Warstud  Offline OP
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Posts: 5,920
MIchigan
Originally Posted By: L_Sludger
Anything external is going to be eaten by road salt.


You misread the post.

Originally Posted By: Warstud
Does an internal fuel filter provide longer life to a fuel pump compared to an external?

Re: Fuel Pump Longevity [Re: Warstud] #4524004
09/23/17 12:13 PM
09/23/17 12:13 PM
Joined: Dec 2005
Posts: 10,349
Upper Midwest
kschachn Online content
kschachn  Online Content
Joined: Dec 2005
Posts: 10,349
Upper Midwest
I'm not sure it makes any difference. The couple of times I've opened up a fuel tank to replace a pump I've been almost shocked how clean it was.

The only conclusion I can make on the limited data I've seen is that Japanese fuel pumps are made better than German ones. The two I've replaced have been on BMWs and they failed in under 150,000 miles. I've never had one fail on any of my Japanese cars even at twice the mileage.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Fuel Pump Longevity [Re: Warstud] #4524008
09/23/17 12:15 PM
09/23/17 12:15 PM
Joined: Oct 2011
Posts: 5,091
USA
NHGUY Offline
NHGUY  Offline
Joined: Oct 2011
Posts: 5,091
USA
The question was....does a returnless system with internal filter,make the pump last longer than a return system with external fuel filter. I think its a toss up.Both filter the fuel,and both pump.I'd say its the quality of the pump itself and wether its a GM pickup/SUV or not that makes the difference. lol

Re: Fuel Pump Longevity [Re: Warstud] #4524010
09/23/17 12:16 PM
09/23/17 12:16 PM
Joined: Sep 2004
Posts: 2,427
snowblind in TX
punisher Offline
punisher  Offline
Joined: Sep 2004
Posts: 2,427
snowblind in TX
Fuel pump doesn't care what is downstream from it. When a fuel filter gets clogged enough to increase backpressure, the OBD2 system will throw lean codes, or some other fuel system pressure code.

Just don't ever run it dry....that is pretty much it.

EDIT: About the above post, in a perfect world with equal pumps, a returnless pump should last longer.

Last edited by punisher; 09/23/17 12:18 PM.
Re: Fuel Pump Longevity [Re: punisher] #4524014
09/23/17 12:19 PM
09/23/17 12:19 PM
Joined: Dec 2005
Posts: 10,349
Upper Midwest
kschachn Online content
kschachn  Online Content
Joined: Dec 2005
Posts: 10,349
Upper Midwest
Originally Posted By: punisher
Just don't ever run it dry....that is pretty much it.

I don't even think that is necessarily important but it probably depends on the definition of "dry". My wife and daughter consistently and constantly run the Sienna and the Accord down to well below 1/4 tank and they seem to be just fine.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Fuel Pump Longevity [Re: Warstud] #4524023
09/23/17 12:25 PM
09/23/17 12:25 PM
Joined: Jun 2014
Posts: 2,013
IL
Vern_in_IL Offline
Vern_in_IL  Offline
Joined: Jun 2014
Posts: 2,013
IL
To "run dry" means sucking in air, air will cause the pump to speed up, then gets hammered when gas returns. Stress, heat and friction....

Last edited by Vern_in_IL; 09/23/17 12:27 PM.
Re: Fuel Pump Longevity [Re: punisher] #4524034
09/23/17 12:39 PM
09/23/17 12:39 PM
Joined: Dec 2014
Posts: 1,684
'murica
Ethan1 Offline
Ethan1  Offline
Joined: Dec 2014
Posts: 1,684
'murica
Originally Posted By: punisher
When a fuel filter gets clogged enough to increase backpressure, the OBD2 system will throw lean codes, or some other fuel system pressure code.


False.

Re: Fuel Pump Longevity [Re: kschachn] #4524123
09/23/17 02:30 PM
09/23/17 02:30 PM
Joined: Feb 2006
Posts: 2,660
Cincinnati
Chris Meutsch Offline
Chris Meutsch  Offline
Joined: Feb 2006
Posts: 2,660
Cincinnati
Originally Posted By: kschachn
Originally Posted By: punisher
Just don't ever run it dry....that is pretty much it.

I don't even think that is necessarily important but it probably depends on the definition of "dry". My wife and daughter consistently and constantly run the Sienna and the Accord down to well below 1/4 tank and they seem to be just fine.


That's not dry, that's low.
Do they constantly run out of gas? If yes, then you're running dry.
I told my wife for years to NEVER run out of gas. She loves playing the "fuel light is on, perhaps I should get gas" game.


2005 Honda CR-V EX, 268k
Re: Fuel Pump Longevity [Re: Chris Meutsch] #4524149
09/23/17 03:05 PM
09/23/17 03:05 PM
Joined: Dec 2005
Posts: 10,349
Upper Midwest
kschachn Online content
kschachn  Online Content
Joined: Dec 2005
Posts: 10,349
Upper Midwest
Originally Posted By: Chris Meutsch
That's not dry, that's low.
Do they constantly run out of gas? If yes, then you're running dry.
I told my wife for years to NEVER run out of gas. She loves playing the "fuel light is on, perhaps I should get gas" game.

No, I'm the only one that has actually run out of gas (twice in the ECHO). To date none of my family has done so.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Fuel Pump Longevity [Re: Warstud] #4524152
09/23/17 03:18 PM
09/23/17 03:18 PM
Joined: Sep 2005
Posts: 5,920
MIchigan
Warstud Offline OP
Warstud  Offline OP
Joined: Sep 2005
Posts: 5,920
MIchigan
Running out of gas can be costly. Usually means a couple hundred for a new fuel pump.

Re: Fuel Pump Longevity [Re: Warstud] #4524252
09/23/17 05:22 PM
09/23/17 05:22 PM
Joined: Oct 2009
Posts: 3,947
Ohio
L_Sludger Offline
L_Sludger  Offline
Joined: Oct 2009
Posts: 3,947
Ohio
Originally Posted By: Warstud
Originally Posted By: L_Sludger
Anything external is going to be eaten by road salt.


You misread the post.

Originally Posted By: Warstud
Does an internal fuel filter provide longer life to a fuel pump compared to an external?

My apologies. Your thread title was incongruous and even disingenuous.

Most of the cars I've dealt with have two fuel filters. An internal sock filter in the fuel tank and an external long-life filter. They also have long-lived fuel pumps. My two cents.


too many cars and oil combinations to list in 150 characters or less

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