Potomac Valley
Junior Member
Hi Everyone. I'm the (somewhat) proud owner of a 1977 Dodge M880, which is the military surplus version of the Dodge W200.
I've owned the truck for about six years and have had the most consistent running problem with it. I posted about it over at Steel Soldiers but I figure I'd ask here as well.
Instead of re-writing everything, here's a copy of the issue as I posted it over there. Hopefully some of you guys might have some ideas?
"This old 77 has had a persistent fuel problem for several years. It just chokes out of fuel and stops running. Here's what does NOT appear to be the cause:
1. Dirty fuel tank - removed, cleaned, reattached fuel tank
2. Bad fuel lines - all lines have been replaced
3. Bad rollover valve - removed rollover valve from the system altogether
4. Fuel sending unit - replaced it and made sure its vending properly
5. Bad fuel pump - replaced mechanical fuel pump TWICE and even just put an electric pump on to no avail
6. Bad cam/eccentric - the thing pumps fuel like mad when its not connected to the carb
7. Bad fuel filter - replaced fuel filter twice
8. Vapor lock - insulated all fuel lines and even experimented with a three-port valve
Sometimes she fires up fine. You can watch the fuel almost fill the clear filter. There's always a little bubble in there though. Then, over the course of an hour or so idling - or faster if you're driving - you can watch the fuel filter empty out of fuel and see the bubble get bigger until the carb sucks air and the truck stalls out.
Any ideas lads? Cuz I'm out of them."
Thanks in advance,
Will
I've owned the truck for about six years and have had the most consistent running problem with it. I posted about it over at Steel Soldiers but I figure I'd ask here as well.
Instead of re-writing everything, here's a copy of the issue as I posted it over there. Hopefully some of you guys might have some ideas?
"This old 77 has had a persistent fuel problem for several years. It just chokes out of fuel and stops running. Here's what does NOT appear to be the cause:
1. Dirty fuel tank - removed, cleaned, reattached fuel tank
2. Bad fuel lines - all lines have been replaced
3. Bad rollover valve - removed rollover valve from the system altogether
4. Fuel sending unit - replaced it and made sure its vending properly
5. Bad fuel pump - replaced mechanical fuel pump TWICE and even just put an electric pump on to no avail
6. Bad cam/eccentric - the thing pumps fuel like mad when its not connected to the carb
7. Bad fuel filter - replaced fuel filter twice
8. Vapor lock - insulated all fuel lines and even experimented with a three-port valve
Sometimes she fires up fine. You can watch the fuel almost fill the clear filter. There's always a little bubble in there though. Then, over the course of an hour or so idling - or faster if you're driving - you can watch the fuel filter empty out of fuel and see the bubble get bigger until the carb sucks air and the truck stalls out.
Any ideas lads? Cuz I'm out of them."
Thanks in advance,
Will