Stuck Ford V8 exhaust valves - help!

[david moore]

Having got around to sorting out the engine for my F8, I find that three of the exhaust valves are sticking as I suspected from low (no) compression. I have the inlet manifold and the heads off and a vey light tap on the sticking valves allows the spring to close them , but next turn on the crank they stick again. I have tried plentiful lube and liquid wrench but no luck.

Normally I would just remove and clean them - they look in good shape otherwise - but knowing the horrors of getting the valves out I'm balking at that.

Any ideas?