It clearly sounds like it’s losing spark to one cylinder which I’m assuming is a bad coil. New Ignition Coil Kit For Kohler KT17 KT18 KT19 KT 17 KT 18 KT 19 Replace# 52 755 48 52-755-48-S 52 755 48 S 211721 PillPack by Amazon Pharmacy. You can no longer buy a single coil for these models . Specs: Includes 2 ignition modules, duplex lead harness, connectors, white plastic tie wraps, and instruction sheet. Kohler Courage engines use 32 707 01-S (according to the parts bulletin at the link above) **, This kit will also work on Courage engines and is more reliable than 32 707 01-S (In our experience). Installed with a breeze, with no issues. Fast & Free shipping on many items! Kohler Ignition Kits. Free shipping. Why wouldn’t it?