my car is poorly
got a misfire at idle and is well down on power ! had a good look all weekend and unable to sort it ! fitted a ful set of genuine plugs but the right hand bank rear plug was seized
after lots of pushing and pulling and left to soak in oil over night managed to get it out and it had been cross threaded and the nose of electrode had split and half of it had fell off !!!! so after fitting new plugs and a known working dis pac and set of leads still got misfire and lack of power so tonight fitted a known set of working injectors and still misfireing and down on power !! compression test tommorrow night ! what im after is has any body had any probs whith the ceramic off spark plugs damaging valves
thinking possibly a bit ceramic has got stuck in valve seat
hope not but is it possible tia mark