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[j33pky]

Local scrap yard?

[Mike Pavelin]

Have you checked the fuel pressure? Should be around 45psi.

[JamesH]

No, do I need a proper test kit or can I do it any other way?

[JamesH]

Have you checked the fuel pressure? Should be around 45psi.

Just completed a test with the proper kit, only got 14/15 psi with ignition on and 22/23 psi at idle. Trying to increase throttle is tricky but it didn't seem to make any difference to pressure. I also checked if the pressure held and it does for at least 5 minutes which was the time quoted in the FSM for a leakdown test.

From this I'm thinking it's a knackered fuel pump. I am going to check for any kinks in the fuel line like it says i  the manual but am suspecting fuel pump.

Some reassurance I'm going the right route would be nice, I don't want to spend £150 on a new fuel pump and not fix the problem.

[Delk]

Not sure about the pump in an xj and if it's the same as a tj. When mine failed I did some googling an managed to just get the pump part itself from the local supplier. It ended up being listed for a Honda.

[wildwood]

maybe just maybe you could disable your in tank fuel pump and use a 'Facet' fuel pump along the chassis rail ......

Tis what is done on injected transplants into old stuff that had mech pumps on the block.


Some are adjustable for pressure as well........ facet pumps if powerful enough are about £30-50

[JamesH]

Yes, same as TJ, at least the late nineties TJs. I'd rather get a complete new standard unit but might get a good used one to test it will fix the issues. I prefer to keep it stock but will take a look at externals while I shop around.

[donk498]

Are mk1 and mk2 pumps the same?  If so I have a spare.

[JamesH]

No, the early ones are smaller, I think they changed the same time as the tanks changed from metal to plastic. I've ordered a second hand one now and will start the process of dropping the tank tomorrow.

[JamesH]

Replacement fuel pump fitted and fuel pressure is back, idle is sweet and it revs nicely.

 

[gazjeep]

Nice one James 

[gordy]

Good one!

[donk498]

  Now you go out and abuse it again 

[JamesH]

Tank, skid and rear bumper refitted and all seems good.

Big thanks the Dr Mike once again for the heads up on fuel pressure test when I was going mad looking at sensors 

The cherry bomb sounds sweet now 

[JamesH]

Now you go out and abuse it again 

Planning quite a few events this year, first one March so got to get some of the more fun stuff sorted.

[bigjeepzj]

nice one jay

[Mike Pavelin]

Tank, skid and rear bumper refitted and all seems good.

Big thanks the Dr Mike once again for the heads up on fuel pressure test when I was going mad looking at sensors 

The cherry bomb sounds sweet now 

 

[Ezz]

We'll done James, tis a great feeling when things go well