14-05-2021, 04:26 PM
Following the advice given, I decided that I would remove the manifold to get a good view of the valves. I took the plugs out and turned the engine on the starter and as predicted found No 6 inlet valve stuck open, but only number 6. With some considerable force applied the valve was persuaded to resume its proper place. I turned the engine over some more using carb & brake cleaner to spray the stems and all operated correctly.
I reconnected the manifold and started the engine, which ran smoothly, I reversed up the slope from the workshop and by the time I reached the top it was not entirely happy. A quick trip around the block and back to running on two cylinders again. I suspect that once warm to hot, the valve stems are sticking in the guides?
I am now considering what to do. First thoughts are, as Numbers 1 and 3 are playing up, I should remove the head and take out the valves in those cylinders, clean the stems and put it back together. But I await your comments on whether I should be more thorough and remove all the valves for treatment? Perhaps there is a cleaning agent I can introduce down the stems once the heads are exposed?
Your thoughts and/or advice would be welcome
Thanks
I reconnected the manifold and started the engine, which ran smoothly, I reversed up the slope from the workshop and by the time I reached the top it was not entirely happy. A quick trip around the block and back to running on two cylinders again. I suspect that once warm to hot, the valve stems are sticking in the guides?
I am now considering what to do. First thoughts are, as Numbers 1 and 3 are playing up, I should remove the head and take out the valves in those cylinders, clean the stems and put it back together. But I await your comments on whether I should be more thorough and remove all the valves for treatment? Perhaps there is a cleaning agent I can introduce down the stems once the heads are exposed?
Your thoughts and/or advice would be welcome
Thanks