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2003 Ford 7.3 Power Stroke Turbo- Diesel

Asked Mar 23, 2008, 11:56 AM — 5 Answers
I have a 2003 7.3 power stroke turbo-diesel runs great however after driving the vehicle 5 to 15 minutes starts to bogg down looses all power as if, starving for fuel If let sit for 20 minutes will start up and run for another 15 minutes and stop again.Changed the fuel pump and have a full tank of fuel. Quite sure there is no water in fuel . PLEASE HELP !

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5 Answers
TxGreaseMonkey's Avatar
TxGreaseMonkey Posts: 15,601, Reputation: 5358
Senior Cars & Trucks Expert
  
#2

Mar 23, 2008, 12:20 PM


Purge water and change fuel filter.
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hiperf402's Avatar
hiperf402 Posts: 106, Reputation: 6
Junior Member
  
#3

Mar 25, 2008, 06:55 PM
This is common problem on 7.3L Fords. Don't worry TxGreasemonkey, I got this one. I had the same problem on a recent truck. Your problem is in the high pressure oil system. What is happening is that your injector pressure is going down once oil temp sensor calls to regulate it.The oil pressur is what helps fire your injectors. Could be one of two things. 1. Injector pressure regulator(located on high pressure pump which is under your fuel filter, drivers side) or 2. Your high pressure pump. Cheapest bet is regulator but could be both. Not a hard job if you have common sense. Very important to TORQUE drive gear bolt. Let me know which one it was because it is one of the two.
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Pattony's Avatar
Pattony Posts: 1, Reputation: 10
New Member
  
#4

May 2, 2010, 06:15 PM
Truck always will start in morning then I would drive 15-30 minutes, shut off engine....try to restart engine and it will turn over rapidly but will not start. This is an occasional situation with starting, maybe like several times a week.
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TxGreaseMonkey's Avatar
TxGreaseMonkey Posts: 15,601, Reputation: 5358
Senior Cars & Trucks Expert
  
#5

May 3, 2010, 05:39 AM


Pattony, read Item 6 in the link below:

http://www.askmehelpdesk.com/cars-tr...ml#post1415281
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pop2012's Avatar
pop2012 Posts: 1, Reputation: 10
Junior Member
  
#6

Nov 8, 2011, 02:53 PM
Had the same problem, two fuel filters inside the fuel tank were totally blocked with garbage,
dropped the tank cleaned the filters. No more problem.
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