blue smoke

[jayclarke]

engine was jus done rebuilt an still gettin blue smoke spark plugs, plugs wire,oil ,filter was change ..it is a 4g15 twin cam engine...should i use a heavier oil ...i am currently using castrol 20w 50...only get blue smoke on hard accleration..

[4a70]

Did builder set rings at correct gap, and stager the gap position properly? Were valve seals installed properly? And last but not least vsv conection (not sure if thats wat mitsu calls it) is it in good order?? May just be light oil vapour getting sucked back into intake mani under higher vacuum created during acceleration...

[jayclarke]

yep ..studyin if to use a heavier oil