High pressure loss of prime?
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From: OREGON
High pressure loss of prime?
2008 6.7 has been on a diet since 2009 with a shimmed rail plug and never skipped a beat. As of recently i’m getting long crank before it starts whether it is hot or cold. If I hold the throttle at about 25% while cranking, it will start considerably faster than without any added throttle. Is there any kind of a return valve or check valve of some sort on the high-pressure side of the system that could be stuck open or partially stuck open. Brand new fuel filters.
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