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
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Sunday, November 6th, 2011 AT 2:44 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 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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