Hi all- I have a MF135 with a Perkins diesel. It was running good until yesterday when I decided to replace the oil&filter and fuel filters. After changing the filters it took forever and a lot of hand pumping to get the fuel filters full and fuel through the injection pump but it finally did start and was running normally. I drove it around the property probably 20 minutes, no work just riding, and it was running good just like before. I shut it down to put away some tools and when I restarted the tractor 5 minutes later it sounded like it was running on 2 cylinders. It starts fine but seems to have lost 1/3 of its power and has black smoke out the exhaust, heavy black smoke when giving it throttle. Any advice you guys have is appreciated!