Quote:
Originally Posted by StuieG
What year is your JK? As i've literally just got in from changing my fuel filter and it's located on the chassis rail under the drivers seat. So that where the fuel lines run.
Have you got any pictures of what you did with the pipes? As in splitting them and connecting them etc?
It's a great idea, what kind of money did it set you back?
Cheers
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My JK is a 2009. But all JK CRD's have the stock fuel filter in the same location (under the drivers seat bolted to the chassis rail with it's own skid plate).
I have left the stock fuel filter assembly as is. There is nothing wrong with its filtering capabilities, my main issue was that it is terrible at sensing and separating water from fuel. I still change the stock fuel filter every 10,000 kms like normal.
With my secondary system, the aftermarket filter is 5 micron (the stock filter is 10 micron) which is the same as the injector nozzles, so basically I've added a filter into the system than will filter out particles that are bigger than the injector nozzles and could block or cause damage to them. And the Fuel Manager I have used is has a water trap that is proven to be reliable in the 4wd industry.
If someone wanted to get rid of the stock fuel filter assembly completely and run one of these setups, this is possible - although you would need to wire in a resistor into the electrical plug going to the stock fuel filter to trick the ECU that it's still there otherwise you will have a CEL. You would just need to join the supply lines together at the stock filter location and extend the fuel return line all the way to the new fuel filter assembly.
BUT running only a single 5 micron filter may mean that you need to change filters more often as it will be collecting a lot more particles than the stock 10 micron. This is why most people who run these finer filters usually leave the stock one in place to catch all the bigger particles and the secondary filter to catch anything that the stock one doesn't.
There is plenty of info on how to run fuel filters on diesels as it is very common for 4wd touring rigs who maybe spend plenty of time out in remote places where diesel has algae growing in it or condensation building up etc (this can happen very quickly if diesel is left sitting, as opposed to petrol where it can sit for a very long time before becoming contaminated). There just wasn't much info on installing a system on a JK CRD out there.
Total cost was about $250. If I remember correctly it was about $180 for the universal Fuel Manager kit, about $15 for the 5 micron filter cartridge, about $40 for the speedflow fittings, and maybe a few $$ for the metal for the bracket etc. The fuel line tool I am told costs about $10, but I got my local Jeep workshop (not a dealership) to hook up the new connectors and lines and he charged me a 6 pack of beer.