1991 Jaguar XJ6 engine miss

1991 JAGUAR XJ6
165,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ABGEORGE
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  • 1 POST
After engine heats up to operating temperature and runs for an hour or so, we get a miss in one or two cylinders. Acceleration is sluggish and fuel economy drops drastically.
Injector or emission control problem?
Apr 27, 2008 at 3:28 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Hi there,

i would get the ignition tested on an oscilloscope hot to check for any problems, also have the fuel rail pressure tested for a faulty injector, check all other tune items as well start here.

mark (mhpautos)
Apr 27, 2008 at 5:56 PM
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