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  1. #1
    ryand's Avatar
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    1200 DI Rough running cold

    For all you guys that know DI systems....my 1200Di seems to have issues with staying running when its cold on startup it really has to get warm before it runs well....Is this common?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Common? Not that I know of.

    Usually the DI systems are more stable cold to hot than the carb machines.

    Sounds like a sensor or stator is out of spec when cold.

    Is it just at idle that it won't stay running, or does it happen at various speeds?
    In or out of the water?

    What exactly is happening?

  3. #3
    ph2ocraft's Avatar
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    What's your compression when cold?

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    Bernie's Avatar
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    Look in the electrical section for the DI machines .There is a value for the air temp and water temp sensors .Make sure the values are correct on them .If not put a resistor in the line to a value that corresponds to the temp you have (ambient)and try it then

    Cheers

    Bernie

  5. #5
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Bernie View Post
    ...resistor ...value that corresponds to the temp you have (ambient)...
    What does the EMM do if you simply unplug the air or water temp sensor?
    Does it generate a Check Engine error, or default to a safe operating mode (richer fuel mixture)?

    I would test this myself, but I don't have a Ficht engine here in working condition that is not already winterized

    Is there a chart somewhere of the full range of temps and resistance values?

    Maybe I am missing it, but the 2002 online manual lists only the nominal resistance range for 25C (77F) of 990-1010 ohms for the air temp sensor, and 985-1015 ohms for the water temp sensor.

  6. #6
    Bernie's Avatar
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    check engine comes on and rpm limit

    Bernie

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    Bernie's Avatar
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    Yes for the chart I will try and find it and post it .It was sent to me in the early days on the forbidden site .

    Bernie
    Last edited by Bernie; 10-22-2008 at 06:38 AM. Reason: more info added

  8. #8
    Bernie's Avatar
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    Ryand ,Tried some new plugs?

    Bernie

  9. #9
    ryand's Avatar
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    Quote Originally Posted by K447 View Post
    Common? Not that I know of.

    Usually the DI systems are more stable cold to hot than the carb machines.

    Sounds like a sensor or stator is out of spec when cold.

    Is it just at idle that it won't stay running, or does it happen at various speeds?
    In or out of the water?

    What exactly is happening?
    In and out of the water the machine is hard to start and stay running. once warm it is just fine. I checked the sensors and stator when I had it appart and everything looked good...however the air temp sensor had a cut in the part that is exposed to the incoming air....

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by ryand View Post
    ...however the air temp sensor had a cut in the part that is exposed to the incoming air....
    Trim the plastic web in the cover so it doesn't touch the sensor. I then cleaned and smeared a little silicone over the cut in mine.

    Check your sensor resistances again. Pain to get at the air temp sensor pins, but if it is bad, you need to know.

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