1986 Jaguar XJS engine running rich

1986 JAGUAR XJS
80,189 MILES • V12 • 2WD • AUTOMATIC
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RICHM4
  • MEMBER
  • 1 POST
I've installed an used motor from florida. and when I started it ran rough and was emitting black smoke out of the exhaust. After it runs for a short time, it begins to load up and will die when you try to use the throttle. It will not start after it dies. Atfter a while it will start again, but it will do the same thing again as mentioned above. This is my first Jag. XGS. I had someone bring in a 86 Jag. to use as a guide for wiring and vaccum hoses, but there is some slight differences in the two cars. one is a XJSC whike mine is a XJS. Can you help me?
Aug 31, 2010 at 5:25 PM
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DOCFIXIT
  • ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Hi
Unplug cold start injector see if it stops loading up .if not remove cold inj. cover hole start does inj. bleed fuel.
Is fuel pressure at 36psi. ? are O2 hooked up?
Let me know
Thanks for donate
Sep 3, 2010 at 11:36 AM
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