Mark Ulm Profile Topics Started Replies Created Engagements Favorites Search topics: Topics Engaged In Viewing 3 topics - 1 through 3 (of 3 total) Topic Voices Posts Last Post Jinma 284 won’t start Started by: Mark Ulm in: Tractor Troubleshooting 3 4 1 week, 4 days ago Mark Ulm Jinma 284 heavy exhaust smoke (blue) Started by: Mark Ulm in: Tractor Troubleshooting 3 7 2 years, 9 months ago DavidPrivett Jinma 284 engine knock Started by: Mark Ulm in: Tractor Operation And Maintenance 6 24 9 years, 4 months ago Bob Rooks Viewing 3 topics - 1 through 3 (of 3 total)