Question about 2003 Ford F250 Super Duty Crew Cab

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03 ford superduty 6.0L diesel starts then dies only after sitting all night

If truck isnt started every day it will start then die and take three attepmts to start have had the fuel and oil pressures tested and new fuel filters, batterys test good

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You probably have an air leak in the fuel line. Air bubbles rise to the top-most area of the tubing and form a "vapor lock" . Find the leak, stop the problem! IT's probably a loose connection somewhere.

Posted on Jan 04, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

Posted on Oct 06, 2008

  • 202 Answers

SOURCE: 96 ford explorer code p0301 mis fire 1

Sounds like either a bad plug wire, or coil pack. This is about all that would cause the misfire.

Posted on Apr 17, 2009

  • 290 Answers

SOURCE: 2003 Ford Escape won't keep running

2 solutions: first, ignition control module is getting hot and shutting car down. 2nd; you didn't mention your dash(service soon) lights were on.<p>
You said the fuel filter was pretty clogged up. It's sounds like a bad case of EGS(ethanol gas syndrome). The ethanol;being a corn deritive;acts like corn liquor(which is what is is), and turns the fuel to goop, and adds large amounts of water through out all the systems.<p>
It clogs up the fuel lines,the injectors, and ruins fuel pumps. It also puts heavy carbon on egr valves, int. and exh. valves, and can ruin oxy sensors, and catalytic converters.<p>
Let's try the cheapest way first:Buy a can of SEAFOAM and Berkline 2+2 at your parts store. Take out the oxy sensor(s) and clean the ends using the 2+2 and re-install.
Then change out the fuel filter again. Pour the SF into a tank of PREMIUM(only) gas. Change the pcv valve. Then start vehicle and let idle for 3-5 min(even if you have to rev it up to do it to get the SF flowing through the system), and then drive it 10 hard miles.<p>
Replace that fuel filter, and then let it idle some more. Your car sounds like it is really messed up bad. Unless you take it to a garage that has a fuel system cleaner machine, this is the best way to do it.<p>
After this, add SF every 3-5000 miles to your tank. It will prevent this from happening again. Also; to be on the safe side. Have a PSI check on your fuel pump. This goop could have burnt it up. I hope this helps.

Posted on Sep 01, 2009

Sean80000
  • 1867 Answers

SOURCE: 87 f250 drained brand new battery

I would first have the alternator checked by an auto electrician to ensure it is working correctly and is providing the correct volume of current. It may be faulty and when driving you will be drawing battery power instead of power from the alternator to run the electrics. This will drain the battery.

Alternators do not last forever and if you are still running the original unit it is likely to be on it's last legs and you will need a replacement unit.

Posted on Nov 30, 2009

Darion
  • 7 Answers

SOURCE: 2005 Ford E350 Cargo Van Diesel starting problems

These International engines can be difficult to diagnose without the proper tools; namely Ford's I.D.S., or Navistar's DLC.

As for the o-ring the dealer was hinting at, they may have meant the o-ring on the fuel injection pressure regulator. I have witnessed these leak and cause difficult or no starting. This component is located at the rear of the engine below the turbo exhaust supply tubes. A specialty socket is needed to replace it (35mm 12 point socket which resembles an O2 sensor socket), although replacement is most likely unnecessary considering that your vehicle does eventually start. If this were indeed the culprit, your engine would not start. There is a test port next to this regulator to test oil pressure (bolt with allen head relief). A high pressure gauge which reads greater than 5,000 psi is necessary to test at this port. When your engine doesn't start, try checking what the oil pressure is at this port. A minimum of 3,000 psi is needed for the engine to start and 5,000 psi is prefered

Other sources of this problem could be the intake air temperature sensor, oil temperature sensor, or wiring compromises. It's a shame the dealer didn't want to spend the time necessary to pinpoint your problem. So glad I'm out of that crooked industry.


Posted on Dec 01, 2009

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