Bloodyaussie (18th March 2016), macca (18th March 2016)
BigRAWesty (18th March 2016), Bloodyaussie (18th March 2016), Rossco (18th March 2016)
Possible faulty injector. Not atomising correctly meaning one cylinder running richer so hotter. No effects on engine temp as its only 1 cylinder. Extra heat from the faulty injector can cause the cracking and melting.
Only my theory though.
Bloodyaussie (18th March 2016), Rossco (18th March 2016), Sir Roofy (18th March 2016)
Hindsight now but did you ever run any kind of injector cleaner
04 ST 3lt auto, not enough Mods to keep me happy, but getting there