Hi, i was driving my honda when suddenly it lost power and got a very hard knock. Later after i let it cool down i started it and it still had the knock but i had to get home, so i drove the atv slowly(i know, STUPID) about 3 miles until it heat seized. I got it home and did a teardown of the engine, I installed a brand new cylinder and piston(the piston from the honda factory was installed with the inlet side pointing towards the exhaust??)after putting it all back together and adjusting the valves i started it up, to my dismay it still has a very hard knocking sound, any clues?? :dry:

ps. there was no play in the crankshaft at all.

All help is appreciated! 🙂