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Message: [QUOTE="Maryland dieselnick, post: 1272605, member: 22661"] Jomax if it starts happening you have choices. You mentioned one. Will it be too late? No . The geometry used in the valve arraignment along with it being stiction and not a seizure, it is not instant catastrophic damage. The d word action of components of any sort would also need a new program that does not fire the injectors on the exhaust stroke, which is causing the thermal expansion causing the problem with trucks that have clearances that are too tight to tolerate that without causing stiction. You can take the head to a machine shop with a great reputation for high performance engine work. They can open that guide up and even put a .0015 taper in its end. Hey may even have a source for a quality valve in stelite ( powdered cobalt coated). The original is a valve that can be had for $7 and change so a source for a possible upgrade would be good. If it happens and you want to dance with ford, you need to get it to a shop that already knows what's up, jumps in and then tells ford there are going with a new head as just replacing the valves just puts new valves into a guide that is too tight. He must check new head valve stem guide c,earances before fitting new head or he might be slapping on the same problem. [/QUOTE]

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