Carter low pressure fuel pump. - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 10 (permalink) Old 04-20-2014, 04:40 PM Thread Starter
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Carter low pressure fuel pump.

I think my original low pressure fuel pump (in the frame rail) is on its way out or clogged up. Is the Carter pump P74221 an adequate replacement for the stock Delphi I think I have? It's about $152, I'm not really ready to throw more than that into it right now.
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post #2 of 10 (permalink) Old 04-20-2014, 06:56 PM
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Re: Carter low pressure fuel pump.

Your truck only has 1 fuel pump, and its the frame mounted electric pump. I would buy a bosch oem replacement. You can get them from riff raff for about $140


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #3 of 10 (permalink) Old 04-20-2014, 06:56 PM
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Re: Carter low pressure fuel pump.

But why do you think its going out?


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post #4 of 10 (permalink) Old 04-21-2014, 12:00 AM Thread Starter
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Re: Carter low pressure fuel pump.

It has 392,000 miles on it, I have less than stock power, it hardly puts out any black smoke, even under full acceleration like it used to, sometimes I'll hit a few hard potholes and it'll want to pop a friggin' wheelie (like it used to always do), but then it'll go back to driving like a dog. I had some light tweeking done to it and I used to be able to light 'em up through 1st and 2nd gear. I could start out in 2nd towing a bobcat, now it's always 1st even with no trailer. It's not throwing any codes and it's acting like when my old 351s would develop a clogged fuel filter just before the carb, my 7.3 just seems like it's not getting enough to drink.
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post #5 of 10 (permalink) Old 04-21-2014, 12:00 AM Thread Starter
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Re: Carter low pressure fuel pump.

riffraff.com?
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post #6 of 10 (permalink) Old 04-21-2014, 01:06 AM
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Re: Carter low pressure fuel pump.

Maybe you should the pick up screens to see if they're clogged
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post #7 of 10 (permalink) Old 04-21-2014, 02:21 AM
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Re: Carter low pressure fuel pump.

Quote:
Originally Posted by going for 400000 View Post
riffraff.com?
Ford - 99-03 Super Duty 7.3L - Fuel System & Related - Fuel Pump / Systems - Bosch OEM Fuel Pump - Riffraff Diesel Performance

And bruce is right, I've seen it time and time again, higher mileage trucks especially, the socks/screens on the fuel sending unit inside the tank get clogged with debris, and rob you of power. Its a good idea to clean your exhaust backpressure sensor and tube out also.


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #8 of 10 (permalink) Old 04-21-2014, 02:53 AM Thread Starter
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Re: Carter low pressure fuel pump.

I put a new bed on this past summer so I pulled the fuel sending unit out and it looked clean, that's why I was thinking maybe the pump was wearing out. I think I should see if I can get the fuel injection pressure checked on the back side of the fuel bowl. That'll at least tell me if the pump is working sufficiently, right?
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post #9 of 10 (permalink) Old 04-21-2014, 02:57 AM
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Re: Carter low pressure fuel pump.

It would probably still be a good idea to drop the tank and actually pull the screens off to clean. And yes, if no restrictions are in the fuel tank, plumbing a pressure gauge in a pressure test port in the back of the bowl would tell you if the pump is weak


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post #10 of 10 (permalink) Old 04-21-2014, 12:23 PM Thread Starter
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Re: Carter low pressure fuel pump.

Thanks.
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