fitted engine over weekend ,turns over has if no compression , stripped timing off to double check reset timing spot on ,key way 12.00 oclock pistons 1+4 at tdc coloured links spot on, on cams , still same as if poor compression ,took spark plugs out every time soaking wet smelling of petrol ? new spark plugs tried another coilpack ,triple checked all plugs connected ,anybody had this problem ? is timing out some how ,rings stuck any ideas,