My 95-B2300 has almost 190K and after a recent tuneup the #2 cyl started to missfire in idle. No exterior problems detected. Looks like I will need to lift the head suspect a valve guide or seat or cam maybe. Anyone have a similiar story?

initial tests - #1=150 #2=145 #3=145 #4=150
running idle test #1=100 #2=45 #3=85 #4=100

bringing rpm up and #2 starts to fire better with better compr.

It still runs but I need to make a call soon.

Anyone buy a gearhead engine or know a quality source for a replacement motor in California?

Thanks