Eco Diesel JGC fuel filters change - interesting observation.

[Hydeski]

I changed the fuel filters on our 14 Jeep Grand Cherokee Eco Diesel today and noticed one of the filters was much lighter than the other {system won’t let me upload that pic} The dealer changed last time and it looked very easy so I decide to do myself this time. I looked further and saw the rubber piece that goes inside the hole was in the filter so a couple of questions:

What would cause this to happen?

Is this why the one filter is so light as basically it wasn't filtering fuel?

Has anyone seen this before when changing their Eco-diesel fuel filters?

When I changed the filters I put a little bit of oil on the threads/rubber gasket but I don't put anything on the hole of the filter as it is my understanding that is where the fresh fuel goes back into the fuel system and I don't want to take a chance on some contaminant getting in the fuel system because I had something on my finger, etc. To be honest I am not sure if dirty fuel goes from the outside of the filter to the center or from the center to the outside. I would assume it is outside to center and then into fuel system.

Any feedback is appreciated.

Thanks,

Mark

 

[carlhenry]

Welcome to the group u just saved yourself a lot of cash go have a few beers

 

[John]

I changed the fuel filters on our 14 Jeep Grand Cherokee Eco Diesel today and noticed one of the filters was much lighter than the other {system won’t let me upload that pic} The dealer changed last time and it looked very easy so I decide to do myself this time. I looked further and saw the rubber piece that goes inside the hole was in the filter so a couple of questions:

What would cause this to happen?

Is this why the one filter is so light as basically it wasn't filtering fuel?

Has anyone seen this before when changing their Eco-diesel fuel filters?

When I changed the filters I put a little bit of oil on the threads/rubber gasket but I don't put anything on the hole of the filter as it is my understanding that is where the fresh fuel goes back into the fuel system and I don't want to take a chance on some contaminant getting in the fuel system because I had something on my finger, etc. To be honest I am not sure if dirty fuel goes from the outside of the filter to the center or from the center to the outside. I would assume it is outside to center and then into fuel system.

Any feedback is appreciated.

Thanks,

Mark

I think maybe the rubber grommet was pushed inside the filter when the dealer installed it. It was likely filtering although there may have been slight bypass. You are correct the fuel is filtered from the outside of the filter.

What do you mean by one of the filters was much lighter than the other?

 

[carlhenry]

Prob wet one dry one I guess

 

[Hydeski]

Forum won’t let me attach the pic showing color difference as says it is too large which makes no sense as it was taken by same phone as pic I posted. One filter looks tan and the other looks a light gray.

 

[John]

Forum won’t let me attach the pic showing color difference as says it is too large which makes no sense as it was taken by same phone as pic I posted. One filter looks tan and the other looks a light gray.

Are you referring to two new filters?

 

[Hydeski]

No - the filters I pulled out after 12000 miles.

 

[carlhenry]

Was one oil and one fuel

 

[Hydeski]

No - both fuel filters. Not sure on Ram Ecodiesel but Jeep Eco takes two identical filters side by side.

 

[carlhenry]

Interesting eco takes one

 

[John]

Sorry I didn't realize you had the jeep. I guess I should have read more carefully I guess one is like a prefilter and will get darker than the other.

 

[GearHead]

No - both fuel filters. Not sure on Ram Ecodiesel but Jeep Eco takes two identical filters side by side.

I have the RAM and my wife has the JEEP. The JEEP uses two identical filters side by side as you have witnessed. If one is darker or swollen that would be an indication of some type of fuel contamination or overfull. If one is a lighter color and lighter in weight, then being crazy suspicious, I would suspect that the dealer only changed one, although that would be weird. My next thought would be one is full and bypassing to the second filter. I change my own filters so that I can monitor condition, keep up the good work.