HI, just wondering if anyone has completed a valve stem seal replacement on the 1FZFE engine with the head on? I have made a tool to get compressed air into the cylinders (keep the valves up) but still working on ideas for a tool (gadget) to compress the springs so I can relase the collets. This is a bit more of a challenge on these engines as the valves are resessed into the head. Work so far - Cams are off, valve shim sizing complete and ready to order new shims, compression test ok - 150 to 170. So far no probs apart from the lack of information on the 1fzfe head. The reason I started this work was excessive smoke on start up after travelling long distances and oil consumtion higher when towing my caravan. Engine has 214K on the clock and was running fine.