I recently bought a new bike from a private owner. Last week I picked it up and rode it home with no issues. Friday I went to go for a weekend run and barely made it out of the neighborhood before I had a considerable decrease in power. Engine light comes on at high RPMs The bike seemed to get bogged down. Turned around, got home and proceeded to check spark plugs. Inline test shows weak spark to rear cylinder compared to front cylinder. I replaced the plugs and the wires since the bike had been sitting for a while. No fix. Checked the DTC code: P1356 - No combustion rear cylinder. Swapped the plugs and wires (front to rear) same issue: weak spark rear cylinder. The bike starts and runs but the rear cylinder/header pipe is cold. I smell fuel so am thinking the injector is ok. Is this a possible coil issue? If so how do I test the coil? I heard there was a resistance test you can do but don't know where to start. The coil has already been removed. It is the stock single fire coil P/N 31743-01. Got a run this weekend and I already sold my other bike. Any help would be appreciated.