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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

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 03-27-2004, 23:52 Post: 81366
ibngriz



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I have a Farm Pro 2425 that only has 15 hours on it. I was useing the loader today and all of the sudden it started to miss and black smoke came out of the stack and a real hard knock was coming from the engine. I got it back to the barn and it is going to stay there until I can get my dealer on the phone. I have never had this engine up to 20000 rpms and the oil is fine. Could this be a fuel problem? I am still running off of the fuel that the dealer put in it when I bought it. I have added nothing to it.I am really concerned because I really like this little tractor but at least I have a warrenty.I hope this is not a preview of thins to come. I have almost talked my father -in-law into buying one but he doesn't know about this problem.Any ideas? Thanks Tim






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 03-28-2004, 00:12 Post: 81367
DK35vince



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Replace the fuel with some fresh fuel and conditioner, run it for a while and see if it clears up.






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 03-28-2004, 00:27 Post: 81368
ibngriz



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Thanks I will try it first thing in the morning.






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 03-28-2004, 04:52 Post: 81372
harvey



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I WOULD NOT RUN IT UNTIL IT HAS HAD A COMPRESSION CHECK!

Fuel does not cause your type of a problem "ALL OF A SUDDEN". Mechanical things cause all of a sudden stuff.

Hopefully something easy like a Injector nozzle went to lunch, possibily dropped valve and no dammage to piston.

Good Luck Harvey






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 03-28-2004, 05:13 Post: 81375
TomG

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Hope it's OK this morning. Diesels make black smoke from overheating and too little air (which is really the same thing) and from various mechanical problems.

I'd check the air cleaner and for obstructions in the intake manifold. There's a chance that heavy work on a new engine caused over-heating but a warning light or gauge should have provided warning.

Obstructions and fuel are about the only things that would be easy to check without a repair manual and some wrenching experience. I'd be careful running it hoping things will cure itself. There are a few mechanical explanations such as compression loss from broken rings where it wouldn't do the engine any good to run it.

If it starts and operates normally over-heating is a good guess. The problem may be present only the break-in, and the only lasting problem could be glazed cylinder walls that might prevent the rings from properly seating. Such an engine likely would enjoy a normal service life but burn a little oil. If it were over-heating, it'd be good to figure out why the temp light or gauge didn't provide warning.






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 03-28-2004, 05:32 Post: 81377
TomG

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If it seems like an over-heating problem there are a few other things I forgot to mention. Coolant level, rad cap, clogged rad fins, fan belt tightness covers most of the possibilities.

The suddenness of the problem and the loud knock may indicate a mechanical problem and again I wouldn't want to run the engine much if it still knocks and misses. Another possibility if the smoke is gray rather than black is fuel starvation. Mine smokes, misses and knocks if I don't get the lines completely bled after an fuel filter change (old style pumps aren't self-bleeding). The filter also is a good candidate for fuel starvation problems.






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 03-28-2004, 07:27 Post: 81382
edward_dugas



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Nice that it is still under warranty, let dealer fix. On occasion The clearance between a valve rocker and the valve push rod is excessive and the rod comes out from under the rocker and in turn the valve does not open or close. This in turn will cause a knocking noise and smoke. Once the engine is stopped it will be hard to start again. Fix is to take off valve cover, reinsert push rod under rocker, adjust clearance, put valve cover back on. Have fun.






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 03-28-2004, 08:32 Post: 81387
Chief



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Let the dealer do their thing. If it happened spontaneiously as you described; could be a possibility that it blew the head gasket. (this is not an uncommon event with these engines) Water or contamination in the fuel is a possibility but not likely as the filter should catch most if not all of it unless it was totally overwhelmed. Have you pulled the fuel filter and checked the catch bowl for contamination? Check that first if the dealer cannot get to you right away.






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 03-28-2004, 08:45 Post: 81388
hardwood

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I would'nt even start the engine, let the dealer come out, winch it on the truck, take it to his shop for repair. This kind of situation is where you'll know for sure how good of dealer you've chosen. That's kind of a sick feeling when something brand new poops out right at the git go, but better it happen now than a few hours after the waranty runs out. Best of luck, Frank.






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 03-28-2004, 09:13 Post: 81392
DK35vince



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It still sounds to me like bad fuel/filter and/or sticking injector.






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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

Thread 81366 Filter by Poster:
Chief 1 | chipuren 3 | DK35vince 2 | edward_dugas 2 | hardwood 2 | harvey 1 | ibngriz 6 | TomG 4 |




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