Hey guys, I have a Cen Gensis, the version that came with the Nemesis... with a blown engine.
Basically a few days ago when I was bashing my truck, I needed to change the glow plug. By mistake I attached the new one wrongly, and damadged the thread on the head button. When I was running it, the glow plug literally blew off of the engine. I didnt know what the problem was, until I tried to attach it back again, when I find that I couldn't screw it in since the screw thread was damadged.
When I went home I took apart the cooling head and removed the button, and went to buy a new one.

The retailer warned me that there might be metal filings inside of the engine, and that if I didn't clean it up correctly, I may damadge the engine. That's exactly what I did, but more of that later. Today I took it apart, try to clean it with fuel and rid it of the metal filings. As I was doing that some bits got out and I thought that it was ok. I assembled the engine, attached it to the truck and tried to start it. It started immidiately , and proceeded to drive it in circles in my backyard. When I revved up the engine for quite some time, it stopped abruptly. I went over to see what wrong and found that I couldnt pull the pullstart, it was literally jammed.

After some time to let it cool, I proceeded to take it apart and as soon I took the cooling head off and removed to glow plug button, i saw that the inside was full of bits of metal. I cleaned it up as I could, removed the backplate assembly and tried to push the piston out of the engine. As I tried to nudge the piston rod it literally came off the piston, and with great force I pushed the sleeve out of the engine, the piston still attached to it.

After this ordeal, what do u reccommend? Buy a new piston + sleeve, clean the engine, assemble everything; or should I buy a new engine? If I go for the first option, how can I clean it properly and be sure that there are no metal bits inside?

Appreciate your help

Chris