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4th Gen Engine and Drivetrain-2010 and Up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

2012 cummins 6.7 no start

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Old 02-04-2018, 02:51 PM
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2012 cummins 6.7 no start

2012 cummins 6.7 , deleted, 58,000 miles. warmed up for 20 mins drove 1/2 mile down road, it stalled out, no restart, no codes. put it in heated garage for 24 hours, diesel 911 In the tank, replaced fuel filter, I'm getting fuel to the filter, to the high pressure injection pump and to the rail, still nothing. it turns over, doesn't fire though. it will fire with ether, I was towing a trailer with a finicky plug, but all lights still work. any ideas? thanks
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Old 02-05-2018, 11:05 PM
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Make sure you disconnect grid heater when you use either, unless you like really loud noises when the either ignites in the intake. You need to monitor fuel rail pressure when cranking over engine. Sounds like injector or PLV (pressure limiting valve) leaking. Fuel pressure in rail should be equal to set point pressure when cranking. Make sure battery is fully charged when testing cranking pressure at rail.
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