1989 XJS V12 Jaguar

Tiny
TONY_D
  • MEMBER
  • 1989 JAGUAR XJS
Well my jag seems to flood out. I put a brand new distribater cap, spark plugs, and plug wires. I get plenty of spak and gas to the cylinders. I all so did a compresion test on all 12 cylenders, the tested perfect. When I took the fuel rail off, I hooked the fuel lines and wires to the injectors back up and turned the engine over, and each injector sprayed fule and when I stoped turning the engine over they did not leak. Im getting 45 psi of fuel pressur in the fuel rail. After hooking every thing back up I unpluged my fuel pumps relay trying to get the motor to run in a lean condition, and it runs perfect till it uses what little gas in the fuel rail. When the engine was runing in the lean condition I quickly test one injecter wire and it was geting differant ome readings as it accelerated, and I tested my throttle position sensor, all check good. Im starting to think that my computer is bad? I dont know, if I could get some help it would be greatly apreciated.
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Thursday, January 4th, 2007 AT 10:06 AM

3 Replies

Tiny
BRUCE HUNT
  • EXPERT
Have you checked the EGR valve? Check to make sure it is functionable. Look at the air filter and PCV valve. Other items send signals to the computer and they affect the amount of fuel that is called for.
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Thursday, January 4th, 2007 AT 2:45 PM
Tiny
TONY_D
  • MEMBER
I realy dont think my jaguar has a egr vavle, but I whent out and bought a new map sensor, and still no luck, I check all wires for posible breaks, and nuthing they all test fine. The flooding problem is realy buging me lol. Seems like I have tried everything. :Cry:
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Friday, January 5th, 2007 AT 9:05 AM
Tiny
WINDJAMMER56
  • MEMBER
I have same car with very similar problem, When cold and first attempt to start lots of white smoke and barley runs have to apply throttle to keep it gong. Then it dies. Next time I start it runs better but will eventually die third time it will run fine and after a few minutes of warm up I usually drive and get a mile or less and it dies at speed. After I wait a few more minutes it starts and runs normally. Geesh, Anyway I was wanting to know how do you check the EGR valve to make sure it is working?
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Friday, January 12th, 2007 AT 8:00 PM

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