Fuel Filter replacement
#1
Fuel Filter replacement
I got the multiple cylinder misfire codes on my '04 XJR again. I decided to change the fuel filter since I'm pretty sure it was original. It was pretty simple. I put the car up on ramps and removed the plastic tray from the driver's side.
The fuel filter was right there under the driver's feet, held in with a bracket.
The fittings seemed to be 20mm and 16mm, so I used a monkey wrench. There was some residual fuel pressure in the line. Next time I do this I'll wrap a rag around the fitting before I take it loose. It was only a few ounces of gas, but I still got sprayed in the face with it.
I got this filter at Autozone. I had taken it out of the package and had it sitting next to me when I got the gasoline bath. When I picked it up to install it I found the gas had washed all the lettering off the filter, including the arrow that shows you which way the fuel should flow. I compared it to the old filter to figure it out. Once it was back together the engine cranked for about 5 or 6 seconds then ran fine. I guess time will tell if it solved my problem.
The fuel filter was right there under the driver's feet, held in with a bracket.
The fittings seemed to be 20mm and 16mm, so I used a monkey wrench. There was some residual fuel pressure in the line. Next time I do this I'll wrap a rag around the fitting before I take it loose. It was only a few ounces of gas, but I still got sprayed in the face with it.
I got this filter at Autozone. I had taken it out of the package and had it sitting next to me when I got the gasoline bath. When I picked it up to install it I found the gas had washed all the lettering off the filter, including the arrow that shows you which way the fuel should flow. I compared it to the old filter to figure it out. Once it was back together the engine cranked for about 5 or 6 seconds then ran fine. I guess time will tell if it solved my problem.
The following 10 users liked this post by gmcgann:
ayavner (02-18-2018),
firstchoice (04-13-2015),
FriendlyJagXJ8L (06-13-2023),
lcmjaguar (06-03-2013),
Na5h (07-02-2013),
and 5 others liked this post.
#2
#4
#5
#6
#7
Trending Topics
#9
#11
Man, it your lucky.. I changed the fuel filter on my 2004 VDP this weekend and my guess it was orignal. 120k miles.. So what I am getting at, the filter was soooo clogged when I loosened the nuts and wiggled the line free I got sprayed in the face with rusty gas.. the line had a ton of back pressure... the gas looked brown coming out of it... its a wonder it didnt clog an injector..
Edit: i just read you got sprayed also lol
Edit: i just read you got sprayed also lol
Last edited by GvilleVDP; 06-04-2013 at 07:57 PM.
#13
gmcmann:
Great photos and write up. I will check but suspect I do not own a 16 or 20mm wrench. I do plan to change my filter when I change the oil in a few weeks, no duplication on removing the cover. Curious if there may be a pressure release for the fuel pressure rail, perhaps in the engine compartment? 73K miles on my XJR and believe its the original filter.
RyeJag
Great photos and write up. I will check but suspect I do not own a 16 or 20mm wrench. I do plan to change my filter when I change the oil in a few weeks, no duplication on removing the cover. Curious if there may be a pressure release for the fuel pressure rail, perhaps in the engine compartment? 73K miles on my XJR and believe its the original filter.
RyeJag
#14
#15
Join Date: Nov 2009
Location: The beautiful Mornington Peninsula in OZ
Posts: 2,974
Received 740 Likes
on
623 Posts
gmcmann:
Great photos and write up. I will check but suspect I do not own a 16 or 20mm wrench. I do plan to change my filter when I change the oil in a few weeks, no duplication on removing the cover. Curious if there may be a pressure release for the fuel pressure rail, perhaps in the engine compartment? 73K miles on my XJR and believe its the original filter.
RyeJag
Great photos and write up. I will check but suspect I do not own a 16 or 20mm wrench. I do plan to change my filter when I change the oil in a few weeks, no duplication on removing the cover. Curious if there may be a pressure release for the fuel pressure rail, perhaps in the engine compartment? 73K miles on my XJR and believe its the original filter.
RyeJag
Yes there is. There is a Schrader valve on one of the fuel rails near front of the engine.
You have given me an idea to rig up a little connection to this with a length of pipe to depressurise the fuel line. Will need a female Schrader also like an old air line fitting.
This should avoid fuel in the face!
Next idea-fit this rig if you are worried about having the Jag stolen (some have been) and fuel line will not pressurise.
Still have a few synapses working!
Last edited by meirion1; 09-01-2013 at 05:51 PM.
The following users liked this post:
solerydr (09-02-2013)
#16
#18
This is definitely a good write-up. Will be doing this job probably next weekend on my XJR. One thing I noticed over the years is that this type of filter does not come with o-rings. I have always re-used the existing o-rings in my truck / suburban etc. but I always felt that I was cutting corners. I just did not want to match up some random o-ring that may or may not be suitable for gasoline exposure and thus far, re-using the o-rings, did not cause any problem.
Does anyone know a source of the fuel filter o-rings, may be the size and the type that should be used on this filter?
Thanx.
Does anyone know a source of the fuel filter o-rings, may be the size and the type that should be used on this filter?
Thanx.
#19
Take your old filter and try to blow through it. It's a quick and easy way to check how plugged your filter is. You can blow through the new one to see how easy it is to blow through a clean filter, then blow through you old one. If its really plugged you will barely be able to blow through.