Smoking engine after rebuild

[G4GAV]

Evening gents,

Iv been offered a vectra 2.2 Sri and its smoking a fair bit. It just had a complete top end rebuild with all genuine parts but when you drive along and put your foot down it like a really bad foggy day! Any ideas to what the problem may be?

[DTi Elite]

if it has been rebuilt after a chain failure it could be the rings , when the pistons hit the valves they can compress the ring gaps & nip the rings , this causes smoke at high revs .

[G4GAV]

It was rebuilt after a head gasket was going and running lumpy, it been skimmed and new everything has gone on apart from valves and cams. Genuine gaskets and valves stems too as kit was bought from a faux hall dealer. The engine runs very smooth and no banging or tapping what so ever

[G4GAV]

The valves have been taken out and cleaned though?

[G4GAV]

Spoke to a few peeps on this and they have all said different things, I'm getting very confused now.

[paulvectrac]

What colour smoke I would say either Rings or the piston is marked

[Leemarksmith]

Didn't think the head gaskets gave on the 2.2... Was there another reason for the re build?