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Strange occurrence

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Old Mar 12, 2012 | 12:24 PM
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Default Strange occurrence

Yesterday I rode my Limited to my son's house and parked in the driveway. Driveway is fairly steep, so when I went to leave, I had the ignition on, but I just pulled in the clutch and slowly backed down to the street. I had only moved a foot or two, and I heard what I thought was a pop, then a sizzle and saw smoke. It came from behind the air cleaner assembly.

Once I got down on level ground, I started the bike, checked all the gauges, lights, etc. Everything worked fine, and I rode it 25 miles to home with no problems.

I didn't have time to remove the air cleaner and look around to see if there was obvious damage. Anybody have any idea what might have happened?
 
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Old Mar 12, 2012 | 12:27 PM
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Sounds like you "bumped" your engine over one rev and the residual gas ignited.
 
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Old Mar 12, 2012 | 12:28 PM
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Drop of oil fell on to hot engine?
 
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Old Mar 12, 2012 | 12:30 PM
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My guess is you just ignited some unburned fuel, kinda like a backfire, and hiccupped or popped back through the A/C.
 
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Old Mar 12, 2012 | 12:45 PM
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I second. Sounds like an A/C burp. Carbed bikes do that a lot, though it is admittedly rare for an EFI bike.
 
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Old Mar 12, 2012 | 02:10 PM
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The engine was cold, it had been sitting in my son's driveway for 4 hours or so and it was only 75° out at the time.

I was thinking since the ignition and fuel pump were on, I rolled back a little bit, released the clutch lever in 1st gear causing the engine to turn over a little and must have ignited some unburned fuel. That was my initial thought, although I didn't know if it was possible with a FI bike. The smoke I saw was coming from within the air cleaner, which had the appearance of coming from behind the air cleaner assembly.
 
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Old Mar 12, 2012 | 03:30 PM
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I don't think its recommended to pop the clutch a little while backing up. Didn't even know it could be done, unless I'm out in left field here.
 
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Old Mar 12, 2012 | 03:38 PM
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If you get time look behind the Backing Plate at the plugs and wires that go to the throttle body.Make sure the plug is tight..
 
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Old Mar 12, 2012 | 03:43 PM
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Originally Posted by Sgt_Torque
Sounds like you "bumped" your engine over one rev and the residual gas ignited.
I agree.
 
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