Enrico8n47
New member
- Joined
- Apr 4, 2024
- Messages
- 23
- Tractor
- 1947 Ford 8n
I recently purchased a 2008 GT2550, and I have no experience with the Kohler CH670-0011. The engine ran a little rough, but evened out when it warmed up. Recent oil and filter change, along with hydraulic fluid. About 700 hours usage. Fresh gas and some fuel system cleaner, and it seemed to be running smoother. Today I was mowing for about 15 minutes when the engine developed a mechanical clatter in line with engine revs, sounding like an old engine with mechanical lifters from the 1960s. I immediately reduced throttle and disengaged the PTO, idled it back to the garage. Some smoke in the exhaust, not thick black or blue. Oil level is within the marks on the dipstick. After cooling down, I checked compression - about 120 on the left (sitting in seat), 100 on the right. Spark plugs were carbon coated. I cleaned and re-gapped the plugs (.030). Removed the oil filler cover, and some vapor escaped. It fires right up, but still has a valvetrain clatter. Before I put a camera in the spark plug holes, can anyone tell me what additional maintenance/repair can be done to ensure the valvetrain is at spec, or if this means the engine is no longer serviceable? What additional maintenance/repair can be done?