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Mack Gazza

Problem with EA7 470 CCRS Motor in 2004 Mack Qantum

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Looking for some ideas on a problem l have with a EA7 470 CCRS Motor in my 2004 Mack Qantum . All of a sudden fully loaded doing 95 kms/hr started missing and losing power,  so stopped to check out for obvious problems around the truck and nothing seemingly wrong, turned engine off  and restarted and ran fine on idle but as soon as power was applied back to missing again. 

Have had the truck in being sorted but cannot find a problem, have cracked injectors while running and all run rough once cracked so cannot identify a particular cylinder, power source to ECU is ok, cam angle sensor been checked and ECU connections gone over.

Has any of you guys out there had this in this engine before or have experienced this in the workshop? Looking forward to any hints or answers to get back on the road again 

GAZZA.

 

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Thanks Mack Tech, cant say as is in shop but most certainly will ask if been checked.

Cheers 

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Good chance it’s the gear on the transfer pump turning on the shaft, replace pump, don’t bother trying to repair it.  

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When my pump failed like that, it still supplied enough fuel for idle/low power but that was all. PS, love my Qantum. 

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Awesome Jamcar, have spoken to mechanic and he agrees with that scenario and will be on it first thing Tuesday. 

Thanks heaps 

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Any results yet Gazza?

Let us know what the problem was mate, maybe it’ll help future victims. 

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