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Old 12-03-2014, 02:37 PM   #1
Proveick OP
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Most Perplexed: metalic restriction

Rode it only about 200 miles since September purchase: Then --

Motor will not spin, plugs out, in 6th gear on stand and motor hits metalic obstruction and will not spin either way when rotating wheel.
(Sounds like left side)
Ideas before tear down? Stuck valve, broken valve spring, rod, crank? Thanks, very perplexed
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Proveick screwed with this post 12-09-2014 at 04:39 PM
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Old 12-03-2014, 05:11 PM   #2
Mike Ryder
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Did you or someone else shove a screwdriver or such in the tdc location hole near the starter?
Did it kick back while running out of gas enough to damag.e the cam chain guides?
In any case pull the starter and look into the clutch for loose bolts.
ThIs is the right time of year for it to happen.
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Old 12-03-2014, 05:32 PM   #3
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Originally Posted by Mike Ryder View Post
Did you or someone else shove a screwdriver or such in the tdc location hole near the starter?
Did it kick back while running out of gas enough to damag.e the cam chain guides?
In any case pull the starter and look into the clutch for loose bolts.
ThIs is the right time of year for it to happen.
Negative on the scewdriver.
Didn't kick, pulled in the clutch and rolled to a stop.
Happened in October, 60 degree day.
I"ve never heard of fuel starvation causing this.
It started for a few seconds after pump, filter and strainer were reinstalled, clanking got progressively louder then shut it off.
Now motor won' turn over. More ideas? Thanks
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Old 12-03-2014, 05:36 PM   #4
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Pull the valve covers and check for dropped a valve.
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Old 12-03-2014, 05:46 PM   #5
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Pulled the valves covers and they are intact, just can't see if they fully open/close.
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Old 12-03-2014, 08:37 PM   #6
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Thumbs down Running out off fuel

Quote:
Originally Posted by Proveick View Post
Negative on the scewdriver.
Didn't kick, pulled in the clutch and rolled to a stop.
Happened in October, 60 degree day.
I"ve never heard of fuel starvation causing this.
It started for a few seconds after pump, filter and strainer were reinstalled, clanking got progressively louder then shut it off.
Now motor won' turn over. More ideas? Thanks
Running out off fuel means also running lean for a short time. On a 2- stroke that's can burn a hole in the piston very quick.
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Old 12-03-2014, 08:42 PM   #7
Anorak
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Pulled the valves covers and they are intact, just can't see if they fully open/close.
If the head of a valve broke off, the stem could stay in place but it might close up the clearance which might not be apparent because you couldn't put that cylinder at tdc because the head of a valve is in the way. So, remove the throttle bodies and look in the intake ports. Then do the same with the exhaust.

First, perhaps, remove the alternator belt. Maybe the alternator threw a wobbler? The BMW cars with the water cooled alternator would do it and if you didn't take the belt of, you might think the engine is seized when you couldn't turn it over.
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Old 12-04-2014, 08:15 AM   #8
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Thank you, going to start with alternator, starter and clutch bolts.
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Old 12-04-2014, 08:19 AM   #9
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Good luck, hope its an easy, inexpensive (as BMW goes) fix.

Ron,
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Old 12-04-2014, 09:52 AM   #10
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Good luck, hope its an easy, inexpensive (as BMW goes) fix.

Ron,
Thanks, it's been a less then stellar ownership experience.
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Old 12-04-2014, 10:43 AM   #11
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Thanks, it's been a less then stellar ownership experience.

That sucks that you are having that experience, the bike gave over 100k happy miles for the PO, and you got 200 miles into it so far. Hope you get this resolved, it's a beautiful bike and you deserve to enjoy it.


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Old 12-04-2014, 11:55 AM   #12
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If you rotated the engine in reverse you could have broke the old brittle cam chain guides, they can be inspected with the valve covers off.

Rod
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Old 12-04-2014, 12:04 PM   #13
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If you rotated the engine in reverse you could have broke the old brittle cam chain guides, they can be inspected with the valve covers off.

Rod
Tried to rotate wheel both directions (plugs out, in 6th gear) didn't force it.
Just a metalic stop in both directions.
Hoping it's loose clutch bolts or the above.
I appreciate everyone's contribution.
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Old 12-04-2014, 01:41 PM   #14
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Clutch in or out and it wont turn over?

If it was running fine last time you rode it, that is perplexing.
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Old 12-04-2014, 03:27 PM   #15
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Do you have curious kids that like to "help"?

strange things end up in strange places some times.

Rod
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