Question 2000 7.3 shutter when started

Discussion in '99+ 7.3L PowerStroke Engine & Drivetrain' started by predatorproblems, Mar 6, 2019.

  1. predatorproblems

    predatorproblems SDD Junior Member

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    I have a 2000 F-350 7.3 with 225,000 miles. I bought the truck with 185,000. Change the oil religiously every 5000 miles in engine and HPOP. Started to noticed a mild shutter when first started almost like a miss in the last week or so. Once you get going it clears up quickly and doesn’t repeat when hot. Could it be a failing fuel injector(s)? My CPS? Not pulling any codes. The injectors don’t buzz loudly like I’ve seen on others that are healthy. Not sure if previous owner didn’t changed HPOP oil regularly causing shortened injector life. Any help is greatly appreciated.


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  2. 01yellerCobra

    01yellerCobra Full Access Member

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    What about the glow plugs? How long do those stay on after the first start?
     
  3. predatorproblems

    predatorproblems SDD Junior Member

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    How would I tell that? Length of time wait to start light stays on?


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  4. 01yellerCobra

    01yellerCobra Full Access Member

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    I was trying to find an exact time, but I'm having issues. I imagine it changes with the weather. The reason I say glow plugs is I believe they're only warmed up when the ECT is below a certain temp. Beyond that the plugs are warm enough to start the engine without having to wait. That's the theory I have going off the fact that I get the WTS in the morning, but once the truck is warmed up I won't see it again the rest of the day unless it sits for a couple hours.

    And if it was injectors I would think you would have issues throughout the day. Usually an injector issue doesn't go away with engine temp.
     
  5. predatorproblems

    predatorproblems SDD Junior Member

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    Gotcha. I did a little research on YouTube and figured out how to check the PCM high pressure oil pump sensor and glow plug relay. Also learned how to check the glow plugs using a multimeter. I am beginning to think that you may be right. I’m going to check the glow plugs with my multimeter, the glow plug relay, the high-pressure oil pump sensor and the PCM to see what my problem is. I’ll post up once I figure it out.


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  6. 250stroker

    250stroker SDD Junior Member

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    First of all, is there white smoke when you start it and it runs rough? If yes, then most likely glow plugs. If no, then most likely an injector. Glow plug light should come on when the ignition is turned on every time, hot or cold. Never seen one not come on when the engine is warm. Might want to recheck that and make sure. The hpop reservoir only holds about a quart of oil or so and won’t harm anything if it’s not drained when you change the oil.
     
  7. predatorproblems

    predatorproblems SDD Junior Member

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    My glow plug relay is out and I ordered a new one. My dash dummy light comes on for approximately 5 seconds every time you turn the key on regardless of outside temperature. No white smoke.

    I disagree with you on not changing the HPOP at every oil change. It feeds the injectors and heads and doesn’t drain with the engine oil. Thanks for the reply.


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  8. hawkdriver

    hawkdriver Full Access Member

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    Just an observation......I tried playing the "get every drop of old oil out of the HPOP" one time.....it is a never-ending task and I gave up and drank beer...never cracked the plug open again.
     

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