Re: No Compression

Posted by HH56 On 2024/3/2 17:41:18

Unless there is a lot of luck on your side I don't think you will be able to do much with freeing the valves by trying to fill the cylinder with diesel oil. The spark plug is over a valve so not much will get to the stem that way. Even if you fill the cylinder, if the valve is closed it will not let any pass and if stuck open, unless there is some kind of air disturbance to make a mist and force diesel to reach far enough to coat the stem and drip down into the guide, oil will just drain into the intake or exhaust manifold. All in all it sounds like more of a mess without much if any that will get onto the valve stem and guides.

Some have had the valve issues which seems to be caused after starting and running the engine on old stale fuel. When trying to start it again after a few days of rest the valves are found to be stuck. Whatever the cause, speculation is an additive must deteriorate with age and after being burned must deposit on the stem where it cools and seems to work like expensive glue. A few engines have been so bad it took disassembly and then brute force to the point of breaking a guide or bending the valve to free it.