So, the engine top end, is usually everything above the cylinder head gasket. This would include everything, in engines that have a overhead camshaft (OHC).

Sticking Valves – From Carbon Deposits – What Should You Do
The first sign of sticking valves, is usually engine missing or running rough when cold. But, sticking valves can also simply be, the byproduct of cold-weather operation. In this case, the sticking valves, will often […]