oldnslo
Super Member
My 2400H has developed problem where it is very hard to get started when engine is at ambient temps of 30 - 50 degrees F. It will crank and sputter and then finally start and run rough like on two cylinders for several seconds before firing on all three. This was a pretty sudden change since used to start fairly easy.
Things I have checked:
Replaced fuel filter. No water or strange substances in fuel filter
Triple checked glow plugs to confirm resistance was similar on all of them
verified getting 12 volts to the glow plugs
Battery is good and turns engine over at decent speed
Fuel flow path is: Gravity feed from fuel tank to filter inlet, filter outlet to mechanical lift pump, lift pump feeds main injector pump.
Question: Would a failing lift or feed pump cause this? Per engine manual lift only provides 3 - 5 PSI. Seems like this would be common element that could cause low fuel flow to the main injector pump and once engine is running possibly supply adequate flow to keep it running. Have not worked engine hard since this problem started but seems to run fine once started.
There is no room between lift pump and main injector pump to install a gauge to confirm pressure.
Things I have checked:
Replaced fuel filter. No water or strange substances in fuel filter
Triple checked glow plugs to confirm resistance was similar on all of them
verified getting 12 volts to the glow plugs
Battery is good and turns engine over at decent speed
Fuel flow path is: Gravity feed from fuel tank to filter inlet, filter outlet to mechanical lift pump, lift pump feeds main injector pump.
Question: Would a failing lift or feed pump cause this? Per engine manual lift only provides 3 - 5 PSI. Seems like this would be common element that could cause low fuel flow to the main injector pump and once engine is running possibly supply adequate flow to keep it running. Have not worked engine hard since this problem started but seems to run fine once started.
There is no room between lift pump and main injector pump to install a gauge to confirm pressure.