Originally Posted by Alvyn
that DONT sound like head gasket to me more like it's run lean for what ever reason and put a hole in one or more of the pistons

what new plugs did you use and what was your engine spec etc?
Alvyn, thats what I was thinking too......more like it has run lean.
He said that his plugs cost £ 60.00....So I guess they must be NGK 9's
Dave's engine spec???? Oh yes: "Heavy on the Aeroquip"