Question about 2005 Ford F 350 Super Duty

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I have a F-350 6.0 Hard Starting when cold no acceleration when cold runs rough and sound like a buket of bolts

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  • Vincent Stasio Apr 28, 2010

    This is a 6.0 Powerstroke Diesel it continues to run poorly even after it warms up It makes a lot of noise. I have several 7.3 diesel F350 all approaching 500,000 miles without any major work not even fuel injectors replaced and they are 1995's and 1997's . The 2005 6.0 has only 200,000 miles and has already cost a fortune in repairs. Which have not solved the problem. Once again the problem is Hard Starting when cold no power and makes a ton of noise. When warm runs rough and pulsates, can run on highway and get up to speed of 70 mph + but uses a lot of fuel and still pulsates at these speeds.

  • Vincent Stasio May 02, 2010

    this is a diesel engine the last expert had no clue there are no plugs caps and rotors. hard to start when cold, now power still runs rough after warming up sounds like a bucket of bolts

  • Vincent Stasio May 02, 2010

    You guys do not seem to understand the difference between a diesel engine and a gasoline engine. You solutions are useless



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You might need a new Ford 6.0 EGR delete kit, just replace the old one and your car shall be okay.

Posted on Sep 19, 2012

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Change the plugs, wires, distributor cap and rotor - air filter and fuel filter. Also, once it's started and at operating temp - pull the vacuum line off the distributor (if equipped) and put a timing light on it. If it needs timed, do so with the vacuum line off - once it's set to where it should be, re-connect the vacuum line and adjust idle as needed.

After this, fill up the tank, (one of if two) and poor 3/4 can of SeaFoam in the tank. Pull any and all vacuum lines and insert them into the can - (hold idle up with hand or have someone help to prevent truck from dying). Run through the entire tank, and refill with desired grade fuel you usually use.

Also, make sure you have no exhaust leaks at the manifold, intake, catalytic converter, or muffler.

The catalytic converter may need to be checked as well, as if it's plugged it will suppress the engine exhaust.

Please let me know if you need any further assistance.


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Posted on Apr 29, 2010

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You may have low fuel pressure which the engine isnt dealing with while cold. The engine uses base setting during warm up and then switches to active sensors once warmup is achieved.

You should also make sure you have spark at all cylinders. Sometimes a plug gets chewed up by detonation and ends up being way out of time!

How many miles on the engine?

Posted on Apr 28, 2010

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  • john andrew manchook May 02, 2010

    Ah...a diesel! I do feel silly.

    No power and sounds like marbles in a coffee can. With a diesel all you have is injection timing. A mechanic would detune the motor to hear timing knock versus normal ignition sounds.

    On the cheap side how about changing the fuel filter? it might give you better fuel pressure if that is what is affecting cold running.

    Keep us posted!

  • john andrew manchook May 02, 2010

    These fellow owners of powerstroke diesels mention getting your engines control module reflashed.

    I guess Ford has some updates that might make cold starting better.

    Also checking your engines computer for codes might help narrow things down. This could be nothing more than a couple of plugged/bad/weak injectors.

    Sorry about the mixup earlier. I didn't see anything on your post about the truck being a diesel.

    It just said 6.0 Ford F350.

  • john andrew manchook May 02, 2010

    These guys are diesel modders and have a lot of things for you to check out!

    I especially liked the check for coolant leakage into your EGR valve.

  • john andrew manchook May 02, 2010">Ford 6.0 EGR Cooler Fix
    Another EGR Cooler Gone Bad? Fix it Right, Fix it Forever!


    Spooky eh?


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