Hi and Happy Holidays to all,

I'll be spending the next week or so unwrapping presents and trying to get my 83 XJ6 running. The car's been sitting a long while so I'm going to systematically get the engine ready to run by WD-40-ing the cylinders, checking fuel flow, checking spark and finally squirting a bit of starting fluid into the cylinders.

Does anyone have a way to get the fuel pump to run? I'm assuming it doesn't run continuously unless the engine is running so that I can check fuel flow? From what I've read the FP is in the trunk... I'm guessing I'll need to change out the fuel filter but want to make sure the pump's good first.

I'd love to hear other people resurrection recommendations too!

Thanks to all!

Perry

 

Perry:


indeed the fuel pump is in the boot/trunk.


One way, is to hot wire directly to it.


Search and get the s57 Jaguar electric Schematics for wire ID.


If you are going to steward this car, it is a must.


Carl

 

Turn the ignition on and it should pump for a sec or two. You'll hear it. My 1982 car has 2 pumps in the rear of the trunk. There might be a panel covering them, but they're in the same ''crater'' as the spare wheel. (for lack of a better word)

 

Two? Sure about that? Should be one pump, one largish filter, a
tank selection valve and hoses and wires. Not to mistake the antennae
motor in the same "crater"!!


HAPPY HOLIDAYS


Carl

 

Sorry. Was confused with the series 1. It is indeed 1 large pump and if your car is a rusty old brick like my xj12 someone probably messed with the tubes, 1 tank may be disconnected because it's leaking or missing, or a combo.

 

the way I prime the fuel system in my 1984, is to first have a fully charged battery, the XJ likes a lot of juice. Second I place the shifter in 1st gear, then I turn the ignition switch to the START position and hold it there for 4 seconds, if you turn your head to the right you can hear the hummmm of the pump pressurizing the system. I do this 2 or 3 times depending if the car has been sitting. If you cannot hear the pump do not assume it is bad, go to the front passenger side, bottom corner of the dash, where you can see a squared black box with a black button on top, press down on the button to see if it clicks, it may have tripped and turned the fuel pump off. That box is the Inertia Fuel Cutoff Switch, or IFCS, in case of a rollover it cuts fuel supply to engine but it can also tripp by itself if deffective. Think of it as a home service panel Breaker.

 

Yeah, that's a good test. It works because Jaguar inhibited the starter if the car is in gear but still allowed the bypass circuit to the fuel pump to work when engine start is attempted.

 

Wow, lots of good advice thank you. I"ll be checking it tomorrow.

Thanks again and Merry Christmas to all!

P

 

Hi, a quick update. The fuel pump works fine, both in the direct hot wire mode as well as normal functionality. I did discover loads and loads of sediment in the feed line and gas that has or is about to turn to varnish. I did drain the left tank (don't know how to dispose of the bad gas yet...) planning to put five gallons of new gas into that tank and try again.

Also will be installing a additional fuel filter between the feed line and the pump since there was so much "stuff" in there. Filters are cheaper than pumps...

Thanks to all!

 

If your car has been sitting for a long time, I would advise you not to activate the pump with the line connected to the fuel rail. Disconnect the line to the fuel rail, then try to activate the pump. This would prevent any 'crap' in the tank and lines from getting to your injectors.

 

Sanchez,

I understand but sadly, it's a bit too late. I was assured by the previous owner that the Jag had fresh gas. I guess it was fresh in the 90's...

Hopefully, the existing fuel filter caught the "crap" but i plan on removing the fuel rail and then hot wiring the fuel pump to flush the lines just in case. Then I plan on replacing the existing fuel filter and adding the one I mentioned.

Thank you!

Perry

 

Get two. One for each tank. No need for EFI filters, though.
gravity only here, not the high EFI generated by the pump.


Carl

 

Carl,

Thanks, yes I was planning to get some cheap filters, maybe glass so I could see the sediment.

Thank you!

 

When I was restoring my Series 3 I did this. Got them from Carquest. Filters installed before the pump

 

In WW2 in the Western Desert campaign in North Africa, a bucket would be filled with sand, (easily available !!), and then gasoline syphoned from the fuel tank of the tank or truck was poured into the sand. When ignited it apparently burns fairly quietly and was used to boiling kettles and heating cans of food.

Mind you I haven't actually tried this myself, so caution is needed !

 

My word, you do have a good memory.

 

Just something I read about. I was born in 1946 !