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Thread: Changing Fuel Filter

  1. #1

    Changing Fuel Filter

    Yesterday I did my usual 5,000 kay oil and filter change. I decided to change the fuel filter as I have not changed it for 60,000 kays. Not having done this before, I researched to get the info needed. All was good until the mention of a vice was brought up. I phoned a mate who just did his, and he too mentioned the vice. I have no vice and had to sought out another alternative. Here is what I ended up doing.....

    1. Remove both fuel lines from filter.
    2. Unplug the wire that connects the water sensor (I think that is what it is for)
    3. Remove the three bolts (two on the inner guard, and one on the guard near the Air Filter box)
    4. Remove the filter from car and carefully unscrew the plastic nut at the base of the filter (this has the water sensor float connected to it)....I was lucky that mine wasn't as tight as 40 bastards, and was easily removed with fingers, which was good as I have heard that they can be difficult and brittle.
    5. So, now I had the filter still connected to the mounting bracket. Without a vice to remove the filter, I had to compensate. I looked at the mounting bracket, and the holes on the inner guard. Turning the filter and mounting bracket upside down, I bolted it back onto the guard and used an oil filter remover to remove the fuel filter.
    6. Removed the mounting bracket from inner guard.
    7. With new filter, I smeared some oil on the rubber seal, screwed on new fuel filter.
    8. Smeared oil on rubber seal of plastic nut and attached it to fuel filter.
    9. Bolted back into Prado.
    10. Attached rear hose to filter.
    11. Placing finger over open pipe, I pumped the primer (making sure that no air is sucked into the filter).
    12. Pumped until diesel spewed out of open pipe.
    13. Connect front hose, and give a few more pumps with the primer.
    14. Re-connect the sensor wire.

    Sorry if I have not named things properly, but do not know the name or terms of things...(if someone could help me, I would be greatly appreciated). I found the job easy enough, and will make sure I do it at the 20,000 kay intervals.

    Yowie
    Because the world's not flat

  2. #2
    Addicted PP Member Schaffer's Avatar
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    Re: Changing Fuel Filter

    That sounds pretty well right. The exact same process in the 120. I did mine on Saturday and yes the wire coming off from the bottom cap is the water sensor. Apparently it works based on a proximity float. I assume this is magnetic and when there is a collection of water the float will float on the water and triggers the sensor contacts.

    Does the 90 series have the tap on the bottom for water drainage?

  3. #3

    Re: Changing Fuel Filter

    Quote Originally Posted by Schaffer
    Does the 90 series have the tap on the bottom for water drainage?
    There is a tap, but it is at the top, towards the front. (I assume that's it)
    Because the world's not flat

  4. #4
    Junior Member
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    Jun 2009
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    Castle hill NSW
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    Re: Changing Fuel Filter

    What I just diod was undo the two bolts that hold it onto the bracket, unclip the water sensot (clip on mudguard in front of fuel filter) pull filter up, put a container under the water trap using a set of multi grips with rags around the jaws GENTLY undo the water trap letting the diesel flow into the container, using a oil filtter wrench undo the filter.
    Installation is a reverse of this, only do the connections up so they seal so next time it is easier

    Regards

    Gerry

  5. #5

    Re: Changing Fuel Filter

    Is the diesel fuel filter an item that gets replaced at some periodic interval by the Toyota workshop as part of a regular service, or is this item left untouched by the dealer and only gets replaced if it requires attention?

    How much was the replacement filter and was the old filter very dirty when inspected?

  6. #6
    Senior Member Chriso57's Avatar
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    Rockingham, WA
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    Re: Changing Fuel Filter

    Quote Originally Posted by lawrance
    Is the diesel fuel filter an item that gets replaced at some periodic interval by the Toyota workshop as part of a regular service, or is this item left untouched by the dealer and only gets replaced if it requires attention?

    How much was the replacement filter and was the old filter very dirty when inspected?
    Yeah its definately replaced periodically by a dealership. Cant remember exact intervals, your service book will tell you. Thinks its every 20,000km or 40,000km or so. I personally swap it out every 10,000km for piece of mind as I am sure a lot of other guys do here as well.

    Chriso
    Current rig - 150 GXL D4D Auto TJM bullbar. Airtec Snorkel. ARB Underbonnet Comp.
    Previous rig - 02 TD GXL.

  7. #7

    Re: Changing Fuel Filter

    Thanks Chriso,

    What is the condition of the filter when you take it out? Is it always black?

    The reason why I ask is because this is what some folks are seeing and they are wondering if it's algae or that's just how diesel fuel is, i.e. a dirty fuel.

    When I fill right up to the filler neck and look at the colour of the fuel, it's a pale clear colour, so I don't subscribe to the notion of the fuel thats discolouring the filter.

    Cheers!

  8. #8
    Senior Member Chriso57's Avatar
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    Apr 2010
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    Rockingham, WA
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    Re: Changing Fuel Filter

    Quote Originally Posted by lawrance
    Thanks Chriso,

    What is the condition of the filter when you take it out? Is it always black?

    The reason why I ask is because this is what some folks are seeing and they are wondering if it's algae or that's just how diesel fuel is, i.e. a dirty fuel.
    Cheers!
    Generally my fuel filters come out relatively clean. As I said before I do change them at 10k intervals so I guess they wouldn't have enough time to completely block up. (Fuel filters are heaps cheaper than injector pumps...!) Also depends on where you get your fuel I suppose. I do also put in an anti - bacteria additive now and again which probably helps.

    Chriso
    Current rig - 150 GXL D4D Auto TJM bullbar. Airtec Snorkel. ARB Underbonnet Comp.
    Previous rig - 02 TD GXL.

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