JD655 won t start: John Deere Review  -- John Deere Tractors Discussion Forum and Review JD655 won t start: John Deere Review -- John Deere Tractors Discussion Forum

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 05-21-2007, 20:37 Post: 142303
mlockwood



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 JD655 won't start

I was mowing my field and wire tangled my mower deck, stalling my tractor. I disconected the PTO and removed the wire. Now my tractor engine cycles, with the normal smoke I usually see when starting but it never starts.So Sad This is a three cylinder deisel






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 05-22-2007, 09:06 Post: 142325
randywatson

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 JD655 won't start

Do regular diagnostics, for fail to start,
1. is the motor turning over strongly?
2. are you getting power to glow plugs?
3. crack an injector line, turn over and see if fuel to inj.
4. some tractors have disconnect on pto and wont start if it is engaged, is it off?
5. the wire thing may have nothing to do with not starting, was is hard starting prior to incident?
6. Is there fuel? or did it happen to be near empty when the wire thing happened?
7 Air filteror fuel filter clogged?

If that is the case additional deeper diagnostics may need to be done. IE, compression test, fuel pressure test,






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 05-22-2007, 09:43 Post: 142326
greg_g



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 JD655 won't start

I think you have that little Yanmar engine in there. My first guess is that the sudden and drastic decrease in engine RPM coupled with a sudden and drastic increase in torque demanded by the fouled mower - cause the injection pump to jump timing

//greg//






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 05-25-2007, 19:06 Post: 142458
mlockwood



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 JD655 won't start

thanks, No leaking fuel, Motor turns stongly, I have not gotten farther. Will check glow plugs. Air filter and fuel filter are fine. PTO is disigaged, I was unable to find a cut off but if anyone knows of one on this tractor let me know. It is half full of fuel and was starting fine before the wire thing.






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 05-25-2007, 19:08 Post: 142459
mlockwood



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 JD655 won't start

Past my expertise, if this is true what do I need to do to get it fixed.






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 05-25-2007, 23:52 Post: 142466
greg_g



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 JD655 won't start

Assuming the injection pump jumped timing, just trailer it and let the area John Deere dealer set you straight. It's not labor intensive, and shouldn't be a very expensive proposition.

//greg//






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 05-26-2007, 00:52 Post: 142468
candoarms



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 JD655 won't start

mlockwood,

I'm shooting in the dark here. Please bear with me.

From past experience, I'm guessing that the wire you hit did more than just wrap itself up in your mower. I'm guessing that you'll find that the loose end caused some damage to your wiring as it flailed about under your tractor.

Look for damaged or broken electrical wires on your tractor. This is most likely the cause of your troubles.

Joel






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 05-26-2007, 06:34 Post: 142470
greg_g



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 JD655 won't start

On a JD/Yanmar diesel?

Only starting-related wiring - "underneath" - are the various OSHA (interlock) switches. But if the interlock wiring circuit was compromised, the solenoid couldn't be energized. We know that's working, otherwise the engine wouldn't be turning.

On the Yanmar I had, I'm pretty sure the injection pump was driven by one or more fingers that were tripped by crankshaft rotation. Damage in that area can upset the fuel delivery sequence (timing).

//greg//






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

Thread 142303 Filter by Poster:
candoarms 1 | greg_g 3 | mlockwood 3 | randywatson 1 |




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