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John Deere Tractors Discussion Forum
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What happened to my R?

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B Johnson

11-07-2006 18:04:34




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I was pulling out on the road and went through a rough ditch with my JD Model R. There was a clunk noise and the engine died. The motor still turns over but it acts like you have the decompression lever pulled out when you don't. White smoke billows out of the stack. I have bleed the fuel system but still no firing.




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F-I-T

11-08-2006 08:15:37




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 Re: What happened to my R? in reply to B Johnson, 11-07-2006 18:04:34  
I would think that the white smoke means diesel fuel being injected into cylinders low on compression. So, the good news is that it appears that the camshaft is turning. Take the valve cover off to verify this. Could be that the decompression shaft got moved some how during the ditch descent and now it is stuck, holding the exhaust valves forward. Hope you're that lucky.

Frank



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skip33652

11-08-2006 05:51:06




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 Re: What happened to my R? in reply to B Johnson, 11-07-2006 18:04:34  
check your air cleaner first to make sure it didn't maybe come apart and shut of airflow. after that pull the valve cover to see if valve train is working .if it is check all valve clearance to see if you didn't drop a valve. if you still havn't found your problem by now get a service manual and start pulling the injectors and checking for fuel flow and compression.Paul



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Illinois Adam

11-07-2006 18:42:37




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 Re: What happened to my R? in reply to B Johnson, 11-07-2006 18:04:34  
I had A similar problem when plowing with my R last spring , except for the "clunk". It died and had the same simtoms. I took the head off and found out it had a blown head gasket.
Good luck Adam



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