p1316 p0300 solved.
 

hi I had multiple misfiring and the engine was vibrating and not smooth the obd reader did show misfiring in cylinder number 4 and 6 I replaced the coil number 4 with NGK ignition coil and changed the spark plug in that cylinder too with ngk spark plug for the cylinder number 6 I used eBay ignition coil but the coil boot on the eBay coil was too tight I think it wouldn't fit the plug correctly I removed that tight coil boot and used the coil boot from my old denso coil tightened all the bolts of the coil then start the engine the engine run smooth. btw the coil is 4 pin

2002 xj8.

Thanks for posting and I'm glad you solved the issue, ..but please keep this with the original post so it shows you solved the issue and people don't have to chase the answer elsewhere.

post it in my old thread . I will make new thread called how to fix this and that to avoid making new threads so just stick with that thread 😄

after fixing that misfiring I did broke the door handle from inside still working but it's broken will try to use some strong adhesive

btw the NGK coil is made in Spain I think it's from same factory that made the original denso 4 pin coil but with NGK label and I think the NGK is slightly higher quality