This is what I found when searching on an FG649 IP. Looks identical to mine. mitsubishi-fe639-fe83p-fe84p-fg649-719994
99 FG Starts, runs rough, won't rev up
- Thread starter kerry
- Start date
SkiFreak
Crazy Person
Are you sure it not just a sticky part problem?
I am not familiar with this specific fuel injection system, but it shouldn't fail mechanically after being sat for a while.
A sliding part, on the other hand, could easily be affected by not being activated for a period of time.
Just sayin'...
I am not familiar with this specific fuel injection system, but it shouldn't fail mechanically after being sat for a while.
A sliding part, on the other hand, could easily be affected by not being activated for a period of time.
Just sayin'...
That's exactly what I thought and why I removed the back cover off the governor thinking the fuel shut off portion wasn't sliding. But it turned out it was sliding. It could be something sticking on the other end but it's not accessible without disassembling the pump.
Had the truck towed to Mountain Truck and Equipment in Longmont, CO. They used to be a Fuso dealer and have worked on the truck in the past--rebuilt the transmission. Probably take a couple of weeks to get a clear diagnosis but hopefully they still have the old Fuso software and can get more info than just a Code 22.
No, but fuel seemed to be flowing adequately as the primer pump was solid. I drove it to the storage lot and it was running just fine so it seems highly unlikely that any filter plugged while sitting. Not sure if low fuel flow would trigger a Code 22. Would low fuel flow trigger any code?