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  1. #1
    stuckmoto's Avatar
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    P0203 - faulty VT1100 injector?

    Short story - I have a P0203(injector #3 fault) grabbed from my datalogger. The ski and Candoo picked show no codes.
    So my next thought would be to swap injectors to see if the code changes. I guess I'm really asking if anyone has seen this code before ESPECIALLY with the VT1100 injectors AND how accurate is the datalogger at seeing the codes?


    Long story - This issue has plaqued me since late last season. Ski runs great till some where in the boost range (usually around 6500-7000, but sometimes
    higher). The engine will stutter for about a second or two. Then runs good for a bit then stutters again. Sometimes it runs for a minute or two then starts stuttering again. When it stutters the RPM's drop to around 5000-5500. Prior to today I've had a couple of different codes I've pulled off of my Candoo(iBR & cluster). None were this code. I originally thought it was a fueling/electrical issue prior to buying a datalogger. So things I have replaced trying to figure this out----new Walbro fuel pump. Total drain of fuel tank. SC slip checked/replaced spring washers. New MAP sensor. New Deka AGM battery. I even tried to run in ECO mode but still stutters. I have done a fairly good visual inspection of the harness and wiring to the #3 injector.


  2. #2
    Water4fire's Avatar
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    IMO If you question any injecter, just pull them out and have them tested. We have a place here near me that I had Riva Delpi's checked and this is how I found out mine didn't like the fuel pressure I was throwing at them. $90 and cheap insurance with peace of mind.

  3. #3
    boost junkie skidoochris's Avatar
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    not going to get anyone to test injectors this weekend, so swap 1 and 3 around and see if the code changes

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  5. #4
    stuckmoto's Avatar
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    UPDATE: While swapping injectors and going over every connection I found #3 with some bad corrosion. Hopefully this is it and I can get them cleaned up.
    Click image for larger version. 

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  6. #5
    www.eastcoastpwc.net Scott's Avatar
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    Also try going back to the stock injector and stock map and see how it goes.

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  8. #6
    stuckmoto's Avatar
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    Quote Originally Posted by Scott View Post
    Also try going back to the stock injector and stock map and see how it goes.
    Yeah I was thinking about that yesterday, but figured my dumb ass would get trigger happy and send 15lbs of boost to it

  9. #7
    Water4fire's Avatar
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    Quote Originally Posted by skidoochris View Post
    not going to get anyone to test injectors this weekend, so swap 1 and 3 around and see if the code changes
    Yes, I agree, but it was a suggestion if the issue persist.

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