can the valve seals be replaced with the heads still on the motor? I have at least one that I am quite sure is leaking...thanks
should be able to, rotate whatever cylinder it is to TDC and it will hold the valve up while you pull the springs and change the seal. You might also be able to pull the glow plug on whatever cylinder and rig up a fitting that screws in and put compressed air to it to hold the valves up.
thats what i might try...