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Thread: 2019 DUAU cold start fault

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  1. 2019 DUAU cold start fault 
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    Been looking at a high mile 206000 DUAU engine for hard start fault no fault codes
    Start fine when warm / hot
    But when cold starts as if it has a misfire
    Fuel rail pressure builds fast to 350 bar no long crank

    Its almost like a lack of compression but only when cold!
     
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  2. Re: 2019 DUAU cold start fault 
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    Have you checked the cold cranking rpm?
     
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  3. Re: 2019 DUAU cold start fault 
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    yes its about 240-250 rpm showing in live data
     
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  4. Re: 2019 DUAU cold start fault 
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    The minimum value is 280rpm, with a good battery and exchange Bosch starter I like to see 320rpm.
     
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