On the weekend I fitted an exhaust to a Honda grom, the studs were hanging…I wire brushed, heated, wd40 and still felt sketchy…..so I heated it up and dabbed a candle 🕯️ on the threads……come off like butter….I’m not saying the wax worked magic…but..🤔
If smoke is coming out of the injector seal does that mean the injector has lifted and combustion gasses are getting into the oil? Had this on a few different vehicles where the injectors are in the head. The combustion gasses mix with the oil and cause turbo bearing failure.