Second time now, it runs on 5 cyl. Pretty randomly and I pull out that plug and it's all caked up, bad rings maybe?
Any ideas on whats causing this?
- Thread starter fortpleilfab
- Start date
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FJ40-GARAGE
I`ll be back....
I cant tell you straight away but i got a link with some pictures for you.
http://www.ipdusa.com/techtips/10084/reading-your-spark-plugs
http://www.ipdusa.com/techtips/10084/reading-your-spark-plugs
Have you done a compression test? If not do it both wet and dry, that will tell you if it is rings or valves/head.
