Fuel Filter Undertray
#1
Fuel Filter Undertray
After the top radiator hose decided to split on me on Christmas evening I decided to service the car while I waited for the hose to be delivered.First job change the spark plugs.Car now on 120 000 miles and I don't know if they have been done or not.Phew quite a job to do but took my time and all was well.Changed oil and filter,new pollen filter,new thermostat and chucked some cataclean in the tank ready for mot next week.Hose arrived,fitted and fresh coolant added.My only job left was to change the fuel filter.Should be an easy job if I could get to it.My dilema now is I cannot remove the undertray hiding the filter.The recessed nuts are spinning the threads they are attached too.Any one else had this problem and know a way of getting them off without wrecking the undertray.
All ideas greatly received.
Many Thanks Steve.
All ideas greatly received.
Many Thanks Steve.
#2
I had the same problem. When I had the dealer change my alternator, I had them replace the expanding nuts in the frame. It was fairly cheap. Check the dealer about the replacement parts (anchors). It shouldn't be news to them. I had them do it as I dont have a lift, which helps to drill/cut the spinning screws and anchors.
Now it's much easier to change the oil,as I can remove the back belly pan. I did the oil change in the past with the rear pan in place, but it was more involed and a PITA.
Now it's much easier to change the oil,as I can remove the back belly pan. I did the oil change in the past with the rear pan in place, but it was more involed and a PITA.
Last edited by Mark in Maine; 01-05-2017 at 09:10 AM.
#3
#4
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Hi Steve,
I've encountered this problem on a couple of X350s. Drilling or grinding the old nuts and threaded studs is possible but not fun. One shortcut solution I came up with is to carefully drill a series of holes in the plastic undertray around the perimeter of the washer under the nut. Take care to drill only through the plastic and not into the aluminum floorpan. Once you have holes all the way round the washer, you can just pull the tray down and the little strips of plastic between holes will break free. So far on the cars I've dealt with, the remaining screws and nuts have been sufficient to hold the undertray in its proper position. If the location of your stripped studs means the undertray will not be properly supported by the remaining fasteners, the expanding nuts Mark mentioned would be a permanent solution, along with a screw and a larger fender washer to support the plastic where it was drilled out.
Cheers,
Don
Last edited by Don B; 01-05-2017 at 12:08 PM.
#5
#6
I addressed this some years ago on this forum. You get a hole saw just a bit larger than the bolt head diameter, mount it on your drill and cut the plastic cover loose.
For the life of me I can't remember how I reattached the cover but I'm certain it was just as clever. (a sheet metal screw with washer?) The spinning bolt was left in place as to remove it was not an option.
For the life of me I can't remember how I reattached the cover but I'm certain it was just as clever. (a sheet metal screw with washer?) The spinning bolt was left in place as to remove it was not an option.
#7
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Cheers,
Don
Last edited by Don B; 01-05-2017 at 02:57 PM.
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#9
#11
Sorry I have no photo and the job is done now.If you look under the drivers seat underneath you will see a undertray which covers the filter.In the middle of the tray there are 4 nuts recessed.When I tried undoing them they just kept spinning.The only way to get the tray off was by using a 25mm holesaw with no drill bit and carefully drill around the nuts.This worked a treat and the undertray came off easy.I refitted the tray using the existing bolts that are either end of the tray and this seems to be sufficient enough.
Cheers Steve.
Cheers Steve.
#12
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Steve,
Do you recall the wrench sizes you used to change the fuel filter? Xeno is asking in the thread at the link below. From memory I guessed the flare nut wrench for the fuel line fittings is 16mm and the nuts on the fuel filter are 21mm or 22mm. If you recall the correct sizes please post to this thread:
https://www.jaguarforums.com/forum/x...change-174916/
Thanks!
Don
Do you recall the wrench sizes you used to change the fuel filter? Xeno is asking in the thread at the link below. From memory I guessed the flare nut wrench for the fuel line fittings is 16mm and the nuts on the fuel filter are 21mm or 22mm. If you recall the correct sizes please post to this thread:
https://www.jaguarforums.com/forum/x...change-174916/
Thanks!
Don
Last edited by Don B; 04-06-2020 at 03:45 PM.
#13
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#16
#17
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The fuel filter is on the left or LHD driver side hidden by the long black plastic undertray described in this thread.
Cheers,
Don
The following 2 users liked this post by Don B:
AD2014 (01-12-2017),
Evan Trinh (01-14-2017)
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