Fell off and engine Seized? - BMW R1200GS Forum : R1200 GS Forums
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post #1 of 28 (permalink) Old 25-Feb-2019, 11:13 AM (717) Thread Starter
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Fell off and engine Seized?

Hi, hope you can help as had a spill on a bmw r1200 gs at around 30mph. Bike hit the deck and carried on running while over on its side.
Now I am not able to bump it in gear or turn it over. I assume the engine has filled with oil or seized?

Any ideas?

vinny
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post #2 of 28 (permalink) Old 25-Feb-2019, 12:03 PM (752)
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You'll need to provide more details such as Year.

I had a spill last year on my 2018, similar experience with the motor not turning over with the starter, it would stall the starter.

It too several attempts pressing and releasing the starter before it finally rolled over and started. It blew heavy blue smoke for the next few miles. No problems since.

Others have experienced this as well, but your case may be different depending on how long you left it running?

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post #3 of 28 (permalink) Old 25-Feb-2019, 12:13 PM (759)
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Engine seized?

Try pulling the plugs and then see if engine will turn over. If oil has filled a cylinder, having the plugs out will let it turn over as the oil will be able to go out the hole.

Jim
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post #4 of 28 (permalink) Old 25-Feb-2019, 12:14 PM (759)
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I agree with Jim. Pull the plugs

Rick
2018 R1200GS

Last edited by Rick92040; 25-Feb-2019 at 12:31 PM (771).
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post #5 of 28 (permalink) Old 25-Feb-2019, 01:06 PM (796) Thread Starter
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thanks its a 2012 model. I will see if taking out the plugs helps. I tried to bump start it with no success.

thanks in advance.
Vinny
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post #6 of 28 (permalink) Old 26-Feb-2019, 02:37 AM (359) Thread Starter
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HI all thanks for your help. Afraid its bad news. The cylinder was filled with oil. I drained it which meant it could turn over but it sounds terrible. It would not start and I guess there is engine damage.
Now going to look for an alternative second hand engine for a 2012 r1200gs. I assume that any engine before this year will fit okay and be the best as after this year the engines changed?

thanks again
Vinny
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post #7 of 28 (permalink) Old 26-Feb-2019, 05:05 AM (462)
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Quote:
Originally Posted by vinnychoff View Post
HI all thanks for your help. Afraid its bad news. The cylinder was filled with oil. I drained it which meant it could turn over but it sounds terrible. It would not start and I guess there is engine damage.
Now going to look for an alternative second hand engine for a 2012 r1200gs. I assume that any engine before this year will fit okay and be the best as after this year the engines changed?

thanks again
Vinny
Vinny - with no disrespect intended, it seems from your comments that you may not have a great deal of experience relative to these engines. I suggest you bring it to an experienced BMW mechanic and ask for their opinion before you think about swapping engines. Just because the cylinder had oil in it doesn't mean that there is irreparable damage. And going back to a previous post...how long did it run while on it's side?
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post #8 of 28 (permalink) Old 26-Feb-2019, 05:19 AM (471)
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Any situation that causes cylinders of any internal combustion engine to be filled with coolant or oil, it is mandatory to pull a plug or injector and turn the engine over, prior to attempting a start. The condition is called Hydrolock and the fact that liquid, unlike air, cannot be compressed, results in bent connecting rods.

That said, OP didn't report how long the bike continued to run while on its side and if it ran until someone shut it down or shut down of its own accord. Also missing is how long the bike remained on its side before being righted and and the attempt to re-start was made. He did report cylinder filled with oil....see paragraph one.

I would think that a qualified engine specialist could use a dial indicator to measure the height of the piston face and quickly determine if the associated connecting rod was bent.
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post #9 of 28 (permalink) Old 26-Feb-2019, 06:52 PM (036)
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Following!this seems like a very interesting thread
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post #10 of 28 (permalink) Old 27-Feb-2019, 12:56 AM (289) Thread Starter
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Thanks for your help.

You are right in that I am inexperienced as I do not know what damage has been caused. I can only assume damage due to the oil being in the cylinder. In my eyes it could have affected lots of items, valves, cam chain, piston, bore etc?

From the spill it is difficult to be precise but the bike ran on its side until it cut out. After trying to bump start it or turn the starter it would not fire up. The rear wheel locked up.
After a couple of days, the oil was drained and it poured out of the left hand side. Enough to fill the bore. I tried to start with new plugs but it did not sound right. It would not fire and after several turns, the starter will not catch the flywheel. To me it sounds as though the timing is out as no spark or fire at all. Then it gave up spinning the engine? Maybe crank also bent?

As you say I think the only option now is to investigate further. If it was just con rods has anyone an idea of prices to replace the conrods and a rebuild of the engine?
I am assuming that it is going to be more than a couple of thousand for the price of a second hand engine?

Vinny
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