Truck won't start, FASS runs and runs.

[staarma]

Well, last night my truck wouldn't start. It would fire a couple of times but it acted more like when you change a fuel filter before the filter housing is full up and fully primed. My FASS pump would just run and run. That led me to believe that I lost the prime somehow so I opened the drain on the housing and let some fuel out just to see if any was in there. I tried to start it again and it fired right up. I ran it hard on the way home and my rail pressure was the same as it has always been. I don't know about my lift pump pressure because I just switched to a new gauge with an isolator and I can't get it to bleed properly so now it just reads 0. It won't start today at all. I did have a funny thing happen yesterday. When I started my truck my Attitude display started warning me so I looked over at it and all of the readings were jumping around like crazy. I shut the truck off and started it again and everything was fine. Last night when the truck wouldn't start I cycled the key three times and came up with a code. It was PO514 which is battery temp sensor rationality. That is the first and only code I have ever gotten out of this truck. I don't know if that is a coincidence or not but I think it has more to do with the Attitude displaying weird info than the starting problem I have now.



For the record I have blended #2 in it with some white PS, 4 oz. of 2 stroke ashless injection oil and 4 oz. of Howe's Meaner Kleener. The fuel filter is a 7u Fleetguard Stratopore from Geno's and was just changed about 150 miles ago with the oil.



Any clues? TIA.

 

[staarma]

Just tried to start it again after draining the filter housing, which didn't have much in it. Tried the key cycle again and this time I get PO 191.

 

[Bob Wagner]

the p 191 could be from turning on the key without starting the truck



its a known cause

 

[staarma]

You are probably right Bob. I was trying to start the truck with no fuel basically and then running the key without starting or running the engine.



Anywho, I R&R'd stuff until the process exposed the EZ. I think it's the switch and I'm pretty sure I'm the cause. Anyway I'm sending the Juice in as well as the EZ. Both are version 1. 0 and I'm getting the Hot done on the Juice.

 

[Bodie]

That kinda sounds like a bad rail releif valve. It just keeps on bypassing to the tank...

 

[staarma]

All is well now that the EZ is off the truck. The switch fell apart in my hand when I took it out. Pretty sure that's the reason. I don't want to take the EZ apart and void the warranty.



At first I thought the FASS quit pumping but it didn't make sense that it would be that. Then I thought maybe the CP3 was crapped out and then the FCA and then the rail relief valve but none of those made any sense either. When I did get it started last night the rail pressure was fine and today once I got it started and running the rail pressure is right where it is supposed to be only a little less with the EZ off of there.

 

[Bodie]

Good deal, at least it wasnt the CP3

 

[steved]

At first I thought the FASS quit pumping but it didn't make sense that it would be that.

From how I understand these new FASS, the CP3 CAN pull fuel past them, unlike the OE LP... so it should start and run even with a dead FASS.



steved

 

[staarma]

That's good info to know about the fuel being able to be pulled past the FASS. Stuff is headed back to Edge now. I can't wait for it to come back. :-laf Oo.