Fuel filter change on the side of the road.

there are the little drop in filters too. plus that engine has too fuel pumps. one high one low

 

No experience with a D13. But i would change both. 1 at a time. Pull 1 fill new one put on and start engine. Let run a bit to get any air out. Repeat on 2nd filter. Probably could do both at once, but means your the roadside, why take the chance of a problem. At home or shop different story.

 

Shouldn’t need to change secondary. Primary collects all the garbage. Heck my peterbilt is a 2002 and it has a primary fuel filter gauge in the dash from factory that is 100 percent accurate. When it gets into the red zone or near it, I change the filter. Never had an issue. Takes months for it to creep to that level. So over a decade later, these trucks don’t have this convienace? You supposed to just drive till your truck can’tpull anymore and you on the side of the road?

 

I would seriously reconsider dumping fuel from a potentially plugged filter into a new one. All the loose sediment and junk in there is going straight into the new one. If the truck has a hand primer pump or electric primer I'd use that instead.

 

Fill the new one with old one? That’s a good way to get a injector nozzle clogged. Whoever told you to do that should get a paddle to the ###. The word a.s.s is censored now huh. What a world we live in

 

A lot of manufacturers these days seem to advise against even pre-filling fuel filters with unfiltered fuel. The pump tolerances in a common rail fuel pump are only a few microns. A bit of dirty fuel in there will kill the pumps pretty quick.

 

Been running a bio blend? If you’re getting into colder climates this time of year, make sure to avoid the bio blend as much as possible... not sure where you’re at currently. If you think this could be the culprit, I’d get some treatment in the tanks before a filter swap or you’ll start the problem all over again.

 

Yup yup. My 01 pete has that restriction guage also. Very helpful. All my other trucks not. He probably could get away with just primary. A month or so ago i got some rot gut fuel, guage showed high restriction . Ended up changing 2 primarys. Later on the engine was getting lazy, pulled off secondary dumped fuel out and it looked like coffee. Also the restriction guage didn't register for the secondary filter. First time in many years that i got bad fuel. I still don't like to fuel when the tanker is dumping in tank.