2001 xj


I've been having a misfire on cylinder 1 for 3 weeks now and I couldn't diagnose it. I started an earlier thread but wanted to start this new one now because I pretty much got it down to this one issue. Summary, new coil, spark plugs, and injectors.

Cylinder one injector when i test for pulse using the noid light, it sometimes have pulse and it sometimes doesn't. Seems to be during start up before a drive its good, after a drive its no good anymore.

My CEL flashes and i can feel it shake while idle, the misfire is constant regardless of pulse or not

any ideas? I find it strange that even with the noid light showing pulse it still misfires...

thank you