TrickyTris
Active Member
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- #21
Well, I was about to order the easy starter while I was watching EzeeTrade Racing on YouTube. He happened to be taking an engine apart after it wouldn’t start & he showed damage to the top of the piston. I decided to take a look at the top of my piston just to see if as it’s sat next to me, and it doesn’t look good!
Pretty sure the piston & therefore engine is done for.
There is a triangle hole off-centre on the top of the piston pointing towards the exhaust (which having googled it seems to be in pics of brand new pistons - though mine isn’t a perfect triangle now) but then around it are 3 pretty bad indents/gouges from whatever shrapnel has been thrown around in the engine & smashed into it.
Am I safe in assuming this engine is done for and it’s the reason it won’t start? If so, I’ll be asking RCModelz for a replacement engine. All I’ve done is follow their break-in procedure. The changes I’ve done have been done meticulously & whenever I’ve taken the plug out, it’s been indoors and with extreme care to ensure not even a spec of dust went in the engine, so I know it’s not from something I’ve done!
Pretty sure the piston & therefore engine is done for.

There is a triangle hole off-centre on the top of the piston pointing towards the exhaust (which having googled it seems to be in pics of brand new pistons - though mine isn’t a perfect triangle now) but then around it are 3 pretty bad indents/gouges from whatever shrapnel has been thrown around in the engine & smashed into it.
Am I safe in assuming this engine is done for and it’s the reason it won’t start? If so, I’ll be asking RCModelz for a replacement engine. All I’ve done is follow their break-in procedure. The changes I’ve done have been done meticulously & whenever I’ve taken the plug out, it’s been indoors and with extreme care to ensure not even a spec of dust went in the engine, so I know it’s not from something I’ve done!