Hey guys.
I have a 2007 5.9 here.
A month ago, coming home from Nevada towing a 28' trailer, engine light came on, showing low fuel pressure.
Got it home, changed fuel filter, drove it for 300 miles, no problem.
Last week, hooked up my trailer again, drove for 20 miles, same light came on. This time truck was showing fuel starvation symtoms.
Limped home, drained fuel, replaced filter again thinking bad fuel, no difference.
Took it to dealer, they again changed filter and noticed debris in the filter housing, cleaned it up and truck showed good pressure.

Yesterday, light came back on and again showed the same signs.
There is dirt somewhere. Where can I look this time?

 

Drop your fuel tank and clean it out. Where do you buy your fuel? Above ground fuel tanks are notorious for rust and water in fuel.

 

Doing that today.
I did siphon out the fuel already and noticed no debris. My fuel comes from work, from a service truck that fills my inbed tank. There could be an issue here so I think there is dirt somewhere in the line.
Where is the dirt, is the problem,,,

 

Do you have a fuel pressure gauge?

Do you operate in dirty conditions, off road?

Look on the top of the tank and make sure that the roll over vents are covered with a tank vent mod. See the small hose coming from the back of the top of the tank? Those are roll over vents, and some trucks (pre 07 I think) did not come with a filter mod... just make sure yours has it.

Look at your fuel filler hose, make sure it is clamped down tightly along the joints coming from the bed. I think I added hose clamps to mine.

I would look into aftermarket fuel filtration.

 

If you are not filtering the fuel from your inbed tank you will just contaminate your main tank again. You might want to consider a better fuel filtering system then the stock system on your truck. The cost of just one injector would pay for the filtering system.

 

Ok, running again. Lots of dirt in the fuel filter and the bottom of the housing. Seems it does not take much to stop it. I bought 80 gallons of fuel in Nevada and I'm thinking that was the problem. The fuel from work is all filtered from the truck.

Any thoughts on an aftermarket fuel filter/pump?

 

GDP makes a very easy to install aftermarket lift pump upgrade, it is sold in store here at DTR

 

I like my air dog, it has been good to me for 2+ years.

You can get a frame mounted 2 mic and a pusher pump like a raptor, a little pricey, but great filtration.

 

Just recieved a brand new airdog 100.
Instructions say to bypass stock filter.
I would prefer to run the fuel through it, just in case anything may pass through.

Any thoughts on this? Waste of time? just go with airdog instructions

 

You can, it will not hurt anything, but you'll have to to play around with fittings. I have not had any problems with the AD filters for a while now. You can get the fleetguard's, I think they are a little better.

You can look at the 2 mic from GDP and mount that before the CP3... that'll give you GREAT filtration.

Those AD filters are only 5 or 7 mic absolute, if I remember correctly.

 

Just reading the instructions. Looks like a PIA to run their system through the stock filter. I'll mounti it up on the weekend.
Looking forward to dropping the tank....

 

I shot you a PM, but I would recommend using the stock filter canister. A few fittings from Glacier (or somewhere else) will fix you up.
Running the tank as empty as you dare makes dropping it a breeze.

Good luck

 

I have lifted the bed for my last few installs, it is much easier in my opinion.

 

I'm driving the truck like a stolen truck at the moment to get rid of fuel. Bloody fuel guy came in Tuesday and topped off both my tanks. Should be able to dump enough into a backhoe tomorrow to make room for the remaining fuel in my stock tank. I'll be spitting diesel for an hour or so (:

If I can buy the connections tomorrow I will. Anybody got any part numbers?

 

Got mine running through my stock filter canister. Not an issue at all. The AD filters are 5 micron and I run the Baldwin PF7977 in the factory canister. Glacier diesel should have the parts you need. I already had the intank LP and the old Fuel basket for the stock LP. Piece of cake to do. My tank was low though, that made it super easy. If your tank is full, pull the bed.