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2005 ford diesel runs rough cold runs fine after completly warmed up

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Idling problem


Mike,
First check for small vacuum leaks by spraying aerosol carb cleaner at any area which might leak [ie vacuum hoses] Any vacuum operated device which contains a diaphragm needs to be checked using a hand vacuum pump. Sears sells a nice one.
Also check to make sure that the purge valve for the charcoal emissions canister is not leaking when the engine is cold.
If this does not help or you find no leaks, I would strongly suspect that you have dirty and/or leaking fuel injectors. Fords are notorious for fuel injector problems. Dirty fuel injectors first show up as a problem with engine stalling or rough idling when cold. Fuel tank cleaners like Chevron Techron will sometimes work. However, the BEST way is to remove all the injectors and have them sent out to a shop with proper testing/cleaning [ultrasound] equipment. Generally, shops which specialize in diesel fuel injection have this equipment. Should cost you around $25 per injector for testing/cleaning.

Dec 31, 2011 | 2005 Ford Taurus

1 Answer

Its and diesel it run real bad and rough when cold .It dont have the power it use to have.when warm it run lot better but still dont have the power.Change the fuel pump and filter still run the same.The...


2005 ford diesel is notorius for having that proble, it is about a $2000 fix at a ford shop.
and there is no gaurantee that it wont do it again
there are pages and pages ,reporting this problem on the internet,just a bad bad problem with 2005 6.0 engine

Dec 14, 2010 | 2005 Ford F 350 Super Duty

1 Answer

I have a 2005 Ford F350 6.0 Diesel and It wont start after the motor gets warm. It also starts rough when cold. When it is running it runs great. Any help would be appreciated.


I had this same issue and luckily my F350 2006 was still under warranty. Basically there is a high pressure oil system that has a tendency to leak internally. You won't see any oil leak. When cold the oil has enough viscosity to keep the pressure sensor from not allowing the engine to start. When the engine is warm the system doesn't reach required pressure to allow the engine to start. In short it's a Ford dealer repair. Good luck.

May 31, 2010 | 2004 Ford F350

1 Answer

F250 Diesel engine won't start in cold weather


check your glow plug relay! located on the right side head

Dec 27, 2009 | 2003 Ford F250 Super Duty Crew Cab

2 Answers

We think it is the diesel injection pump but not sure


Sounds like not all the glow plugs are working.It should run fairly smooth on a cold start if all of the glow plugs are working..Also you shouldn't drive off on a cold start with a diesel,Its really hard on the motors..At least give them 10 to 15 min on a cold start..The oil in them is a really thick oil and when there drove on a cold start theres no oil lubricating the internal parts and will cause the motor to seize up..You may already no this and dont mean you drive it as soon as you start it i just wanted to let you know..When you get alot of white smoke it could be two things,Theres water in the fuel which will make it not have much power die and smoke..But if it runs fine when its warm theres some bad glow plugs...Hope this helps you and have a great day

Dec 08, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

Toyota diesel is rough on initial cold start up


Could be injector problems. is the car down on power?

Feb 27, 2009 | 2005 Toyota Avalon

3 Answers

Ford f250 2005 with 6.0 diesel


I have a 2005 Ford F250 4x4 supercrew, When I first start the engine the truck has no power and will not run good until it warms up which takes about 5 mins. How do i fix this

Nov 18, 2008 | 2005 Ford F 350 Super Duty

3 Answers

2000 F-250 7.3 diesel, cuts out runs rough no power


Well, you have to let diesels warm up before you drive them so the engine gets warm and it may not sound right at first because if its not warm the compression gets off and doesnt fire right. If you try to give it too much gas before its warm, extra diesel will get in the cylinders and misfire. Then when it does fire, there is a lot of extra fuel in it so that causes the smoke and smell. You should always let it warm up for a bit before driving when you havent driven it for a while.

Oct 20, 2008 | 2002 Ford F250 Super Duty SuperCab

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