Engine rattle?
Bike is Hyosung GT250, 250cc vtwin. I just bought it recently.
I have just reassembled this engine, rods, bearings, everything looked clean and tight when bolting it up. It was dissasembled because someone thought it wasn't fast enough. There was one little blemish on a piston, so I filed the nasty bit smooth and went with it. The bores were mint. The engine has been apart before. Bike has 40,000kms on it.
When I start the engine it gives a very short but quite alarming "rattle-brappp" and then instantly clears up to a very slight chink-chink-chink sound idling at 1500 rpm, which again vanishes completely at over 2500 rpm, and is completely smooth to ride otherwise.
It doesn't sound like bottom end, more like timing chain, and more from the front cylinder than the back. Almost like the chain has tight link in it or something.
Perhaps that little blemish on the piston is polishing itself off.
It seems to be getting better as I ride it (maybe an hour in total so far).
Any suggestions?
may thanks,
Steve
"I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
"read what Steve says. He's right."
"What Steve said pretty much summed it up."
"I did axactly as you said and it worked...!!"
"Wow, Great advise there DB."
WTB: Hyosung bikes or going or not.
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