Do our JKs have a fuel filter and if so how often should we change it?

 

There are two fuel filters in the tank. Replace only when symptoms dictate it needs to be changed.

This is from the service manual:

Two fuel filters are used. One is located at the bottom of the fuel pump module. The other is located inside the module. A separate frame mounted fuel filter is not used with any engine.
Both fuel filters are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.

 

Thanks. What are the symptoms to keep and eye out for?

 

Lack of fuel to the engine.

 

Right but how would you know that? What what be the symptoms of that? Stalling?

 

Engine miss and stalling under load are early symptoms.
Low fuel pressure at the rail.

There are other things that could cause it, too. That's where troubleshooting comes in.

 

Ah okay. Learn something new everyday!

 

Chances are, your check engine light would come on, and the code would tell you that there is a problem that could be related to fuel delivery to the engine. Then you would eventually track it down to the filter being clogged.

As far as changing it goes, unless you are using some gas from a questionable source, I wouldn't worry about it. The fuel has very little debris in it, and the filter will stay clean, probably for the life of your vehicle. Now, if you change the pump out, then I would change the filter as well, just to give it a new start, so to speak. Otherwise, this is probably one thing you don't have to worry about for a very long time.

 

Cool. thanks!