diesel_importer
Active member
- Joined
- Oct 21, 2007
- Messages
- 4,501
I've got an LbZ giving me fits. It's having hard starts (extended crank time). So far I've:
Replaced both 1/2" hoses from fuel filter to engine valley, the 3x 5/16 hoses in the valley (suction to pump and return hoses), rebuilt filter head, new AC Delco filter.
Bypassed filter head= no change
Checked injector return on each bank= both sides had almost no return at idle
Shimmed PRV= no change
Finally, Friday before we left, I wired up a makeshift lift pump. It definitely helps. It's starting in about 1.3-1.5 seconds, but with a Duramax that a lot of rotations.
Any advice would be appreciated.
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Replaced both 1/2" hoses from fuel filter to engine valley, the 3x 5/16 hoses in the valley (suction to pump and return hoses), rebuilt filter head, new AC Delco filter.
Bypassed filter head= no change
Checked injector return on each bank= both sides had almost no return at idle
Shimmed PRV= no change
Finally, Friday before we left, I wired up a makeshift lift pump. It definitely helps. It's starting in about 1.3-1.5 seconds, but with a Duramax that a lot of rotations.
Any advice would be appreciated.
Sent from my iPhone using Tapatalk