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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
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2011 EC250 Died
Hello
Bought this from a member on here 2011 EC250 Just been fully rebuild, barrel replated, wiseco piston, carb rebuild It started fine when I bought it I ran it up my garden In the morning started first kick and I ran it down the street at about 20mph nothing mental it then spluttered, internally backfired and died It?s getting a spark I?ve removed the carb, jets and cleaned it all Checked the floats Checked cables to cdi unit Changed the plug Changed the fuel Tried bumping it (just bogs and doesn?t give anything) Removed the manifold and there was a few spoonfuls of fuel(black) Left the plug out and kicked it over a dozen times It you kick it on full throttle it will backfire occasionally Tried a spoonful of fuel down the cylinder with the fuel off and nothing Checked the piston and liner as much as you can and it looks Ok Seems to have compression I?m at my wits end with it, absolutely gutted I?ve just got it and this has happened. Going to drop it to a bike shop Tuesday but ideally would Like to sort it myself |
#2
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Like I mentioned on TT, check that woodruff key. That's something you can do yourself, for free, if you have the flywheel puller already.
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#3
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So the plot thickens
Woodruff key was broken But the flywheel/crank has inner and out movement of more than 5mm Vertical movement also It would appear the bearings have failed. Absolutely gutted. I work for a bearings company so does anyone happen to have the bearing part numbers for the crank cases? |
#4
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Yikes! did it take out the ignition/charging coils and flywheel?
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#5
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Seals obviously will be damaged.
But once back together will be reliable. My left main failed at 11 years. That's not bad going for a competition bike.
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'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
#6
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Left side crank bearing-NJ206ECP(polymer cage) or NJ206ECM (brass cage)
Right side crank bearing- 63/28 |
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