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1991 Jaguar XJ 6 car hard to crank bogs under acceleration back fires through intake

Tiny
ALAN DEMCHENKO
  • MEMBER
  • 1991 JAGUAR SOVEREIGN
  • 172,000 MILES
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
Sunday, November 6th, 2011 AT 2:44 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 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?
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Sunday, November 6th, 2011 AT 3:37 PM
Tiny
TIAGE46
  • MEMBER
  • 1 POST
I Alan, I have the same exact problem. Did you ever find the solution?
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Tuesday, December 11th, 2012 AT 11:18 AM

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