do 99 dodge diesels have a one-way-valve in fuel line
#1
Registered User
Thread Starter
do 99 dodge diesels have a one-way-valve in fuel line
I have my sending unit out of the tank; my lift-pump off and my fuel filter system removed. I would like to know before I put it back together if their is a one-way-check valve in the fuel line or in the sending unit and if their is where is it, I dont see it.
thanks Mike
99 stock 5.9 diesel 4x4
thanks Mike
99 stock 5.9 diesel 4x4
#3
Registered User
Thread Starter
I can't find the thread, thought I had seen it on this site about the check-valve to prevent prime loss. Must be an add-on.
Thanks for the reply.
Mike
Thanks for the reply.
Mike
#4
Registered User
#5
I think there is a check valve, not sure if it is in vp44 or fuel line, can't remember. When I installed my FASS system I made the mistake of using an air hose to blow the fuel line out when I had the hole system dissconnected. Couldn't figure out why I couldn't get the truck started after installation of the Fass. I think in my repair manual I read something about it so I blew air back the opposite direction and the truck fired right up.
#6
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Thread Starter
Well I pressurized the fuel line from the tank towards the lift pump to check for air leaks; didn't find a leak.
The micro mesh filter on the bottom of the sending unit had a lot of crud in it. Removed it and cleaned it, Dodge won't sell just the filter $489.00 for thr whole unit, so I cleaned it.
Fuel tank had some sand and debree in it, not too much I siphoned all the sand from the bottom of the tank. I replaced my lift pump; it started up 15 psi fuel pressure.
VP44 does have a check valve thanks, not sure if their is one in the fuel line.
When I removed my Bed both front mounting towers has cracks running from the mount hole to the outside edge of the metal I will get them welded this week.
Previous lift pump was a year old, not sure if clogged micro filter in tank ruined the lift-pump.
Thanks for replies, Mike
The micro mesh filter on the bottom of the sending unit had a lot of crud in it. Removed it and cleaned it, Dodge won't sell just the filter $489.00 for thr whole unit, so I cleaned it.
Fuel tank had some sand and debree in it, not too much I siphoned all the sand from the bottom of the tank. I replaced my lift pump; it started up 15 psi fuel pressure.
VP44 does have a check valve thanks, not sure if their is one in the fuel line.
When I removed my Bed both front mounting towers has cracks running from the mount hole to the outside edge of the metal I will get them welded this week.
Previous lift pump was a year old, not sure if clogged micro filter in tank ruined the lift-pump.
Thanks for replies, Mike
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