won't start. Possible FASS pump failure, stranded in Jackson Hole, WY

[DFrank]

Hello and Happy New year.

My son has our '05 Dually on a road trip, and the truck died on him, and won't restart.

It was rung when it stalled out.

It was minus 15, and gelled fuel was suspected, but now he's noticing that the FASS pump is not making it's usual noises, or any hints of life at all.

He had it towed to a friend's house where it has slightly thawed out.

No one is open today, so no filters available.

He drained both filters (they did seem gelled) and refilled them with diesel, I believe. It cranks, but won't catch.

Anyone have suggestions? what are options to replace the lift pump, if we confirm this is the issue?

A lifetime FASS warrantee isn't good for much on the spot.

They hoped to drive back to Colorado in the morning, but seems like a long shot now.

If you have ideas or are local and able to help, I will watch this thread closely and relay ideas to him.

Maybe you're going snowmobiling tomorrow and can drag his sled to a local trailhead, while he waits for shops to open monday.


Thanks,

Dave

 

[Ozymandias]

If you still have the OEM Filter canister in place you can use virtually any inline pump to replace the broken FASS, only thing you want to make sure is that the pressure stays below 15PSI, what most fuel pumps are. There is NO lower level of pressure you need to match, a steady flow of fuel is all that the CP3 needs as it has an internal gear pump that brings it up to the needed pressure. Flow is needed - not pressure.

And off course check that they have Power to the pump with IGN On! That we don't have an electrical problem instead of a mechanical one.

 

[JR]

Assuming he checked fuses? Put a known 12 volt source direct to the pump to eliminate any possible wiring issues? It's not optimal but Filters can be reused once thawed and drained. If the fuel is gelled the whole truck needs thawed out, ideally. Filters are the first place to go TU but not the only place....

 

[DFrank]

Thanks guys.
Riley has confirmed the FASS pump has stopped working. It has power and does nothing.
Can anyone suggest a relatively simple fuel
Pump to replace the FASS pump, even if it is a temporary fix until the replacement fass pump is available?

the original lift pump was removed
From the tank, I believe.
The only pumps he’s found at whatever agótenos open today, only makes 5psi.
Would this be adequate, or would that risk CP3 damage?

thanks.

 

[AH64ID]

5 psi is plenty. The CP3 can even live with the flow under suction.

 

[DFrank]

So, the old lines forward of the FAss were abandoned. They are there, but were not even taped over, so I don't want to risk running through those.

I am hoping the 5 psi pump that he can find, won't be over taxed by going through the FASS pump and filter assemblies, but that seems like a real probability.

Maybe he should abandon that system and add a little inline filter like on a gasser, or would that just clog right up?

Any other thoughts to consider for band-aiding a lift pump in to get the truck from Jackson to Boulder?

renting a UHaul and trailer was considered, but their car hauler suggests capacity of 5,900 lbs, and the dolly a mere 3,400. The dually with steel flatbed and two mountain sleds must be over 10K

Thanks,
Dave

 

[seafish]

AS long as the stock fuel filter canister is still plumbed in the engine compartment, just bypass the Fass pump/filter with a new generic fuel pump and some bypass hoses and put a new oem fuel filter (or even better a Baldwin 7977 fuel filter) into the oem canister and drive it home.

 

[SnoKing]

Thanks guys.
Riley has confirmed the FASS pump has stopped working. It has power and does nothing.
Can anyone suggest a relatively simple fuel
Pump to replace the FASS pump, even if it is a temporary fix until the replacement fass pump is available?

the original lift pump was removed
From the tank, I believe.
The only pumps he’s found at whatever agótenos open today, only makes 5psi.
Would this be adequate, or would that risk CP3 damage?

thanks.

Did they try warming up the FASS pump. maybe it just will not turn because of the super jelled fuel in it?

 

[JR]

I take it the engine mounted OE filter is gone? I wouldn't be too concerned about running thru the old lines after a good flush but you need a good filter like what was in the OE spot. I'd try pushing thru the FASS to utilize the filters you have, a cheap inline filter alone will not be sufficient for your expensive injectors.

I have never dealt with them so it would be a crap shoot, but you could also try calling FASS first thing in the am and see if they can next day a pump to you.

 

[DFrank]

Thanks for the tips and replies.

I think everything is fully thawed now. Maybe it gelled and burned ut the pump, or maybe its been dead a while?

Unfortunately it was January three years ago when the pumps came, and as we don't have a garage, I just paid someone to do the install, and seems they abandoned both ends of the old filter and ran direct from FASS to the CP3, i think.

He's going to try plumbing it in behind the FASS system, but where should he open it up to prime it?

Before the CP3, I assume, then at the injector lines, once fuel shows up there?

Thanks,

Dave

 

[JR]

Definitely before the CP3, that will tell you if the pump is pushing through the FASS or not. If you have fuel there just crank it. CR injectors will prime themselves unlike mechanical injectors.

I know its not ideal and may cost an extra day but I'd really be inclined to try FASS first thing in the AM. It would surely save a lot of headaches of trying to undo whatever is about to be done to your fuel lines....

 

[DFrank]

So he’s got it running, but it wouldn’t push through the fass system, so this is the extent of present filtration?

should he drive it 8hrs on this?

 

[DFrank]

What else can he easily add in line?

 

[AH64ID]

I would not even start it with that little filtration. That's likely a 40µ filter at best, you need 10µ minimum to not damage the injectors.

 

[DFrank]

Thanks. This one claims to be ten mikes, so hopefully it ls adequate.

 

[JR]

There is no ill will when I say this but I would not send my son out on the road in sub zero weather with that set up. Zero water separation capability and next to zero filtration....A recipe to wreck a CR injector quickly.

Safe travels.

 

[AH64ID]

Thanks. This one claims to be ten mikes, so hopefully it ls adequate.

Absolute or nominal? What’s the part number on that filter?

A screen door can be 10µ nominal, which is why nominal ratings are nearly useless.

 

[DFrank]

Your concerns are appreciated and not taken lightly.
I’m not sure what else to tell
Him to do.
Thanks

 

[DFrank]

He thinks he’s located a FASS dealer in town and will see them in the am before driving it any more. He has driven it for a few essential errands and hopefully this hasn’t done anything damaging.
They should at least be able to get new filters in the fass unit and bypass if not replace the pump.

 

[AH64ID]

Is the old filter canister still there?

What about running some temporary hose to it and then the CP3?