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    Guest Message by DevFuse
     

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    2007 Mack Vision Wont start



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    6 replies to this topic

    #1 OFFLINE   Krazy_Kvin

    Krazy_Kvin

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    Posted 11 December 2012 - 10:35 AM

    Help!

    I have a 2007 mack cxn613 with the Grey Mack engine in it. The truck was running fine and we had the driver go on vacation for 1 week and when we came back the truck will not start.
    It cranks hard but will not turn over... When we crank it White Smoke comes out the exhaust. The only Yellow lightning bolt code we are getting is 2-9 which is a humidity sensor. ( i do not believe this would stop it from starting). We have primed the lines and pulled them while cranking to make sure the pump is working correctly. The batteries are all new and the voltage is good. Im Kinda dead in the water with idea's. Does anyone have a Troubleshooting checklist or ideas for this situation??

    Edited by Krazy_Kvin, 11 December 2012 - 10:39 AM.


    #2 OFFLINE   fjh

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    Posted 11 December 2012 - 07:45 PM

    Make sure you got fuel in the tank s and noone has syphoned it off on you! you might give it a (small) sniff of ether( starting fluid) see if it will light off on that!It sounds like its getting fuel if your geting some smoke!
    Also have you loosened any fuel lines loosen at least two fuel lines at the head and prime till you get fuel at both then crank they can be real bears to get started sometimes.Once you got two cyls firing the rest will follow up the rear!

    #3 OFFLINE   Krazy_Kvin

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    Posted 12 December 2012 - 02:10 PM

    Im sure we got Fuel. Both tanks are full. And Yes it will start off of Ether.

    #4 OFFLINE   staxx

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    • Model:R686ST
    • Year:1974

    Posted 12 December 2012 - 09:48 PM

    Need to make sure you have fuel psi while cranking the fuel supply pumps do fail also need to make sure ecu connection is clean the low coolant sensor is bad about leaking coolant into wire harness which then follows down into the engine ecu somtimes cause a no start issue but I would put my money on it being a fuel psi issue. When the pumps fail its the gear that winds up slipping on the shaft .

    #5 OFFLINE   fjh

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    Posted 12 December 2012 - 10:31 PM

    Does the primer get firm when your priming if not as stax has pointed out the transfer pumps can fail on a moments notice!But you should be able to get it to atleast light off for a second or so, also as stax mentioned pull the plugs on the ecu and check for coolant fairely common issue.

    #6 OFFLINE   Krazy_Kvin

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    Posted 19 December 2012 - 07:57 PM

    Problem Solved! There was a connection box by the ECU that was disfunctional. Replaced it and the truck started right up no problems.

    #7 OFFLINE   farmer52

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    • Year:1992
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    Posted 19 December 2012 - 08:34 PM

    Aren't electronics fun?
    Ken
    HOF City, PRR Country, and Charter member of the "Mack Pack"




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