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2012 280I Starting Issue After Drop With High Rev


jlmoreno
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While riding, I washed out the front end turning up on a rock face. The bike slipped down and momentarily over revved the motor (as it has done numerous times). I pulled the clutch, picked up the bike and the bike died. I returned down slope and pop started the bike. Returning up hill I noticed the bike had a loss of power and would not idol with clutch fully engaged? Returning straight away to the garage, I noticed the bike was running a bit hot. After a cool down, I topped off the coolant with 100ml/ 3.3oz. (not sure how much it takes to fill from empty). The bike kicks through the same whether in gear or neutral and sounds/ feels like it wants to start. Any advice to diagnosis the problem(s) would be greatly appreciated. Yes, I have the easy start (4 AA's).

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Is this a job for the shop (3hrs each way of travel) or should I purchase the shop took kit (flywheel puller)? The interweb only comes up with the part oversea's? Is there an on-line source for ossa parts or just lewisport?

Also, what are the chances the TPS setting shifted somehow? Your advice is greatly appreciated!

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Similar thing happened to me, the piston had partially siezed and smeared alloy across the rings, jamming them into the grooves, causing just enough loss of compression to make starting a problem. Snap-on and Mac tools make an endoscope tool, see if a local garage will have a look down the plug hole for damage to confirm. Then convert it to 300!.

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Not familiar with the term "lands". Are you suggesting pulling the top end cover, pull the piston, freeing the rings, cleaning the barrell and piston grooves and off we go??? I believe the shop will want to replace the entire top end $$$$.

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Lands are the piece between the rings, personally if the piston has seized I'd replace the rings at a minimum.

To check if there has been a seizure remove the header pipe from the cylinder & look up the exhaust port, crank the motor over slowly & check the whole piston for scoring & smearing of aluminium over the rings

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