Hey guys just got a vz sv8 ls1 everything stock 260000 kms , car runs good drove 5 hours home everthing ran well good power etc but has a low idling problem will stall sometimes at lights etc , when I first start it it revs quite high around 900 or so then if i give it a rev it drops right down to 200 or so ,also I'm a bit worried about a head gasket as there's milky shit on the oil cap and water in the lid also on start up there's a fair bit of water coming from exhaust (stainless)
Cheers
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