Bit a strange one this, when coming to a downward hill, if i ease of you can just smell oil fumes building up, after a few yards this then becomes a billow of smoke from what seems both exhausts, depending on high long the hill is, depends on how much smoke and fumes, any idea's those who are tech?

I do have an oil leak behind cam covers directly above the Ally TOP water inlet pipe to block with sensors on.

cheers

smithy

if you know the cam cover gaskets are leaking then it could just be a build up thats running down on to the hot manifolds

Cheers mate, don't suspose you know what excatly is directly above the top water inlet pipe where it connects to the block that might leak oil do yer?

cheers

smithy

at the front? cam pulley seals?

unlikely that oil is making its way to the manifolds via the cam seals,but as its such an easy job do that and see if it cures it