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FERGUSON FOULED PLUGS

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TRAY

06-21-2004 11:44:45




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I have a massey ferguson TO-35 with a continental gas engine . Every so often one of the plugs will foul. At first it was the number 1 plug then sometime later it was the number 3 . Just wondering if this is common or what may cause this and what are some possible fixes .




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Jerry/MT

06-21-2004 21:39:34




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 Re: FERGUSON FOULED PLUGS in reply to TRAY, 06-21-2004 11:44:45  
By fouled, I take it you mean the gap is at least partially bridged. If the plugs are fouled with a fluffy carbon black, your mixture is too rich. If they are fouled with a black, wet, tarry substance, you're burning oil. Check www.champion.com and look at the spark plug pictures to compare with what you're seeing.



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tray

06-22-2004 09:58:23




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 Re: Re: FERGUSON FOULED PLUGS in reply to Jerry/MT, 06-21-2004 21:39:34  
Thanks for your response . The gap had changed only slightly .The first time the plug was wet and because of a persistent miss I replaced the carburator . The engine has been rebuilt and a new distributor has been installed ,uses no oil.The second time the plug fouled it was dry with black fluffy carbon and again the gap had changed only slightly , I had been bush hogging for several hours when this occured . I appreciate your thoughts on this.

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RAB

06-21-2004 13:47:30




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 Re: FERGUSON FOULED PLUGS in reply to TRAY, 06-21-2004 11:44:45  
Possible causes: misfire, too cool, thermostat, plugs too low heat range, not enough work, too much idling, valve guides, cylinders glazed, worn bores, sticking oil control ring, worn out, broken rings, carburation, weak ignition system, valve clearances, old fuel, wrong oil, + probably lots more.
Fixes: first ascertain the problem, then it will likely be obvious.
Give us a bit more information as to how often, details of use, type of fouling, sevice details etc and we may be able to be a tad more specific on fixes.
Regards, RAB

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tray

06-22-2004 09:34:35




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 Re: Re: FERGUSON FOULED PLUGS in reply to RAB, 06-21-2004 13:47:30  
Thanks for your response, The first time this occured I was doing medium duty field work , with some excessive idling . The plug was black and damp not overly wet but I considered it to be fuel related.I also had a persistent miss so I replaced the carburator .The next time the #3 plug fouled I was bush hogging for several hours .The plug wasnt wet but had a black fluffy carbon on it .I cleaned it reset the gap and reinstalled with no further problems .Some other repairs that I have done are a new distributor ,I bought the tractor after a rebuild, so many items valve train ,pistons, rings etc have been replaced.With the exception of a small miss at idle which I cant seem to adjust out and the fouling of the plugs it runs very good .I would welcome your thoughts

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RAB

06-22-2004 14:50:36




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 Re: Re: Re: FERGUSON FOULED PLUGS in reply to tray, 06-22-2004 09:34:35  
Others have covered most of the areas, but what were the other plugs like when your fluffy carboned plug was removed? I think you wasted your money on new items and need to learn to fix/tune regular service items before you change things on a whim.
Bush hogging for several hours can be an arduous or light duty for the tractor, but anyhow, sounds as though the new carb is set far too rich.
Your "small miss at idle" is possibly a loss of HT somewhere or a general low output from your coil/points/condeser. Could even be due to wrong points gap, poor or loose connection at plug, small leak into inlet manifold, etc etc..
Like the other posts say, you need to check out all the systems and make sure they are in spec.
Regards, RAB

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Ron

06-21-2004 13:01:59




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 Re: FERGUSON FOULED PLUGS in reply to TRAY, 06-21-2004 11:44:45  
Depends on what they are fouled with, gas, oil, coolant?



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tray

06-22-2004 09:46:08




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 Re: Re: FERGUSON FOULED PLUGS in reply to Ron, 06-21-2004 13:01:59  
Thanks for your response , The first time this occured the plug was damp and covered with black carbon .I had been doing medium duty field work with some excessive idling .Because of a persistent miss I replaced the carburator , also the distributor has been replaced and the motor had been rebuilt before I purchased it. The second time the #3 plug fouled it was fairly dry but had a fluffy black carbon on it ,this was after several hours of bush hogging. I cleaned it set the gap and re installed with no further problems.I would appreciate your thoughts.

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Ron

06-22-2004 10:32:30




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 Re: Re: Re: FERGUSON FOULED PLUGS in reply to tray, 06-22-2004 09:46:08  
I wish there was an easier way but now that you have shared the whole story I suggest you start at the beginning. That is, do a compression test, both wet and dry. That will tell you if you are dealing with ring and/or valve problems. If that's OK, then it's not likely a carburetor problem as all cylinders would be affected. That leaves the ignition system. Hook up your timing light and start the engine. Check the light against the timing mark. You are looking for a steady reading for now. If the reading skips around, the distributor is shot. If not, then the problem is the points, condensor, rotor, cap, wires, or plugs (not likely the coil). If it were me, I'd replace all of them. Given that this tractor is new to you, that might not be a bad idea so at least you have a known good ignition system. I know it's expensive so you might want to start with the rotor and cap and hopefully you'll get lucky.

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C. Lovelady

06-22-2004 19:32:12




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 Re: Re: Re: Re: FERGUSON FOULED PLUGS in reply to Ron, 06-22-2004 10:32:30  
I need some information please. I have a 1970 something modle Massey Ferguson decile (sp) tracter. It is a 30 HP and in exlent condition. I was told that this one may be one that was made in France. Dose any one know any thing about this or how one would find out for sure? I seem to have come to a dead end in my recearch till I came across this site. Surely there is a Massey tracter buff out there some where?
Pleas feek freee to contact me direct at czmamakat@wmconnect.com.
Thanks

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