How do I adjust the injection timing on the 27 diesel? I removed the engine to replace gaskets. Put the engine back in and all togeather, but now it won't run smooth at all, (it does run just not as smooth as it was.) It smokes, blue smoke not black, and seems like its off timing somehow. I checked the valves and they're all in tolerance. wierd? When I get this done, I'll ask why my 60 31 briggs isn't charging.