1991 jaguar xj 6 car hard to crank bogs under acceleration back fires through intake

1991 JAGUAR SOVEREIGN
172,000 MILES
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ALAN DEMCHENKO
  • MEMBER
  • 2 POSTS
1991 jaguar xj 6 4.0 have to try to start car 4 or 5 times every time you start it you can easse into acceleration but if you floor it it dies or bogs down and back fires through intake
Nov 6, 2011 at 6:44 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Have you checked the spark plugs? Seems the engine is mifiring and bad spark pugs or related components can cause that.


Did you check for trouble codes?
Nov 6, 2011 at 7:37 AM
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TIAGE46
  • MEMBER
  • 1 POST
I Alan, I have the same exact problem. Did you ever find the solution?
Dec 11, 2012 at 3:18 AM
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