Iv got a b2150 that used to start and run perfect after a 2 second starter spin. One night it dixi down pouring of rain. I didnt think it had harmed anything of my tractors outside. But a few days later, I went to start the 2150 and it had a hard time turning over. It chugged a time or 2 and spit black water out of the high vertical exhaust. This pipe only has a slight turned tip and vertical slant cut. It eventually started but was blowing light blue smoke and running weak and slightly rough. After about a minute or less, it little by little clears up with a clean exhaust like it used to from the git go. Power comes back on and you would never know it has any issue at all. It still starts up immediately but smokes and takes about a minute to clear up and run as it should. I was hoping fouled injectors so I bought a set of cheap China ones and they barely ran the engine at all. So I put the originals back in and it runs the same with the smoky start up. So, what do you techs think? injectors, rings or valves? I have a compression tester but no fitting for the injector port. I'm thinking of taking one of the China injectors and boring it out to fit one of the adapters in the compression kit. IDK if I can get it rigged but maybe worth a try. What should I see for compression cold? Thanks for any thoughts or tip on how is the best way to get this engine running like before. I cant be without it running.