My '85 XJ6 is running just fine now, but time to start doing some basic maintenance to make her even better.

Stoney85 and others have recommended that I install a "pre-filter" before the fuel pump to guard the pump against dirt in the fuel.

I'm assuming that, before the pump, this would be a standard, low-pressure type filter. Am I right?

Those of you that have already done this, is there a specific filter or part number you could direct me to?

Should I put just one in right before the pump, or two, one for each tank?

Thank you,

-mB

 

I just went to the parts store and got two new metal fuel filters.




Fuel lines in the trunk


PS I also replaced the rubber fuel lines. I replaced the line between the valve and the pump, it got kinked and restricted fuel flow.
I couldn't figure out why no start. Put back the old line and all is ok.

 

NAPA 3299 or WIX 33299 will work. Same filter, different box.

Yes, low pressure

Cheers
DD

 

I think using two is smart. If only one side clogs you'll know which tank has a problem.



Cheers
DD

 

The above photo is how it should have come from factory, if I could really try and be pedantic and fault that setup at all, it would be that the filters aren't clear, as that way you can visually check it without having to open the fuel system.

 

Thank you very much to all of you. I have the filters on order now, and this'll be my weekend project - plus fitting the new cold start injector. It'll be pretty hard for me to screw this up with the details you guys have kindly provided me.

-mB

 

Two weeks ago i did mine like this after removing and getting both tanks steam cleaned. It also got a new fuel pump and pressure regulator

 

Mike:


Good thing you are out of range. Or, I could come and help. seems like I am good at screwing things up lately!!!


Working my way out of the last 'screw up".


Carl

 

I have a habit of putting a label on parts that I replace, with the date of replacement and the mileage, that way I look at the part and don't have to be searching records or receipts, I know exactly when I last replaced the part.

so yesterday I looked at my fuel filter. I installed it in 1996. Yes, 1996. That is 19 years ago. I purchased the car in 1989 and it wasn't until 1996 that I replaced the fuel filter it came with. how do you like THAT Carl ? ha ha

the car is still running fine. I started it tuesday after 1 year and 5 months of it sitting in a storage unit.

personally, I think it is overkill to install more filters and I stopped trying to outguess Jaguar engineering a long time ago.

just my opinion, it's your car, you do as you please.

 

Jose:
I don't recall ever forgetting that I ran any of my cars dry on purpose before storage.
with present fuels, said to be a good thing.


Having said that, it's been more at least a couple of decades since I changed filters in any of my critters. Well, not quite true. In the process of gathering stuff for my jaguar's conversion, I got some left overs from a former Jaguar owner. Included was a new fuel filter. As y car got fresh fuel and fresh injectors, that seemed a good time to install it. so far so good.


Wonderment: if one installs two prepump filters of a good quality, is the post pump Jaguar filter superfluous?


Carl

 

Carl,

I did not drain my tanks before I left town for 17 months, I said the heck with it, let varnish be varnish. Someone once told me "if you drain your tanks, they will rust, old gas / varnish is a good thing, it is greasy".

well if I have varnish or turpentine in my tanks it must have been burned off because the car started and it has been starting fine since Tuesday and the exhaust does not smell like turpentine, and there are no leaks, nada.

what I did lose, was 1 tire and the a/c refrigerant must have evapd. I have some cans of R12 and in a few days I'll revive the system. Also have Freeze12 just in case.

all I can say is, Hello XJ-6 , happy to see you baby!

 

How I see it, is that the two pre filters will stop any large debris from destroying the fuel pump, and also let you diagnose easily if one tank is the issue.


I'd still keep the main high pressure filter, for extra super squeaky clean fuel, or mainly the fact that its just easier to not replace it with fuel line, but it is also there in case the fuel pump falls to bits.

 

Jose:


It seems that "modern" fuels stagnate and leave a chalky residue that is the very devil to get out of fuel parts. I gave up on a B&S engine on my chipper. Carb ruined by that gunk. new carb almost as much as a new HF engine. Son got the B&S to run sorta. But, the HF predator is a much more advanced engine. A Honda OHV knock off.


Back into the pan. My neighbor gave up on the 8HP B&S on his tiller. Got an HF predator. Gave me the B&S. Bad silty carb issue again. Cure???? I know how to restore spark on these. itr turns over OK and seems to have compression. so, it ought a run. then what????


Ps: it does have a little filter on the tank to carb line!!!


Carl

 

Thanks again for all your help. For the first time work on this car took me LESS time than I had imagined. I did this in just under an hour last weekend (but didn't have time to post until today). I used the NAPA filter Doug suggested and tried to make it look just like jpipes' picture. I enclose before and after shots.

-mB

 

Perfect!


Just out of curiosity, did you ever remove the larger drain/inspection plugs on the underneath of the tanks and inspect to see if there was any scale/dirt/debris sitting at the bottom of the tanks?
With a bucket to catch the fuel, it would take all of 5minutes a side to do, and give you a good idea of the condition of them, almost irrelevant now you have fitted the pre filters, I only mention it as I did that when I drained the tanks of the old fuel when I go my car.


Very easy job

 

Fuel Water Separator



I had fuel problems: water, rust and old gas when the car was purchased.
I just could not budge the tank drains. We went down to the local garage and this big burley mechanic with a lot of leverage managed to get left side off, but the right side would not budge. He drained the contents into his oil drain and I did not get a chance to see what came out, oh well.
It runs now, but as a temporary measure I added a fuel/water separator and have caught maybe a table spoon of water.