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Old 11-19-2010, 12:23 AM   #1
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Default nitro rustler problems..

well, i recently inquired a used nitro rusty with the trx .15.. not stock i know. however it seemed to fry glow plugs, and when starting the new easy start motor turned, but seem to skip. heres the story. when i first started it up, gas was spraying out the carb, leaned it out slighty so it stopped spraying. assuming it was still way to rich i leaned it out more, it died. so with that said and done i replaced the fuel lines assuming there was a tiny hole somewhere because it seemed that gas wasnt getting to the engine.(which would make sense the needle was on very rich) and it still wouldn't lean out. so i took apart the engine and notice the piston was in multiple pieces, and where the connecting rod meets the piston was cracked and wasnt a good connection, and there was quite a bit of fuel at the bottom. my question is.. does that make sense of those symptoms?
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Old 11-19-2010, 03:45 AM   #2
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When you inquire, that means you were looking for information on something. When you acquire something, that means you came into possession of something. Just wanted to clear that up.

#1, The skipping on starting it is the one way bearing (OWB) It needs to be taken out and cleaned.

#2, Makes tons of sense for a TRX engine to split the rod at the wrist pin, very common. With all that fuel in the crank case it was hydrolocked and thats when the rod probably let go. That or it let go before hand and you flooded it trying to get it to fire.

#3, The piston fragments probably chipped off the piston skirt popping all of your glow plugs, that happens to a piston skirt when the engine was run too hot, it makes the piston weak and brittle. Another very common thing for a TRX mill.
Good luck.
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Old 11-19-2010, 09:34 AM   #3
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as i say to every traxxas owner... throw it in the bin, less headaches then. alot less parts to buy, they are soo weak...

buy a man car like an AE, HPI, ETC, traxxas cars just aint built to be easy, cheap quality so they make more $$$

those crappy TRX motors... they are funny they rev like the moon, yet last a gallon
Mugen Mbx6t / O.S SPEED / Byrons / Savox servos / Futaba
Agama A8 Evo / O.S SPEED / savox / futaba
Driving the best quality cars in the market.
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