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Tractor Talk Discussion Forum

Spark Plug Questions

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JKC

04-11-2004 13:46:06




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1. What causes a spark plug in an old tractor to foul?

2. If you have a badly-fouled spark plug, what is the likely cause? (probably the same question)

3. Where do you purchase odd-sized, more unusual spark plug replacements? I need a Champion W14 and AutoZone and Farm & Fleet do not carry them.

Any help would be much appreciated.

Thank you.




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jim

04-12-2004 08:00:02




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
The most common reson spark plugs foul in old equipment is becasue thye are not used. You may use it to putt around the yard, start it to hear it run, etc. You need to take it out and use it, that is what this equipemnt is designed to do. If you do not use the tractor and get some heat built up in the engine, then it is going to foul plugs, quite frequently. W-14 plugs are a specialty plug, but if you need any and connot find them, let me know, I can get them for you. Sta bil will not help to keep a plug from fouling, all that does is stabilize the fuel to keep your fuel from going bad. One thing to also do is to buy good, high quality, (not high octane) fuel, do not use fuel from a cut rate fuel supplier.

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Jon H

04-12-2004 07:45:40




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
If you have a problem getting a hot enough plug to work with modern lead free gas,this company makes adapters to fit the latest design plugs to almost any engine.



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George

04-12-2004 05:04:20




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
1) Have not have good luck with Champion plugs in recent years. Autolite seems to foul less.

2) Have heard, but not tried, that if you heat the business end of a fouled plug to red hot with an O/A torch you will burn off deposits. Has anyone ever tried this?



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Revredneck

04-12-2004 10:40:27




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 Re: Re: Spark Plug Questions in reply to George, 04-12-2004 05:04:20  
I agree with George about Champion plugs. On the subject of burning the deposits off, I have used a propane torch many, many times to burn the deposits off of fuel fouled plugs. If you heat the tip and insulator till it gets red, it won't hurt a thing, and the plug usually comes out just like new. Be very careful that you don't burn your hands, though. Let the plugs cool before you reinstall them into the engine.
Good Luck and God Bless, Tommy

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youngster

04-11-2004 19:01:25




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
many old tractors with mags have less volts than todays car so they foul do to less volts esayer. try auto lie or AC plugs they like the lower volt envionment.



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txblu

04-11-2004 14:51:58




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
You're lucky dude. You just got the straight skinny from some knowledgeable folks. Wouldn't add a word except Napa is NAPA (National Automotive Parts Association). (Who cares. LOL) I don't have a clue what it stands for but they have parts when lots others don't.

txblu



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Shaggy

04-11-2004 21:07:09




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 Re: Re: Spark Plug Questions in reply to txblu, 04-11-2004 14:51:58  
Around here NAPA is No Auto Parts Around!



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old

04-11-2004 14:36:50




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 Re: Spark Plug Questions in reply to JKC, 04-11-2004 13:46:06  
Plug fouling is caused by many things, oil burning/bad rings , carb set to rich, and or weak spark. I get my odd ball plugs from Orielly's or Napa



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Bob

04-11-2004 14:46:02




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 Re: Re: Spark Plug Questions in reply to old, 04-11-2004 14:36:50  
Add to that... engine running too cool from bad thermostat, or "playing" with tractor without loading it. If tractor is never pulled hard and run hot, try a "hotter" plug, if available.



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BJ

04-11-2004 14:54:57




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 Re: Re: Re: Spark Plug Questions in reply to Bob, 04-11-2004 14:46:02  
And add to that the gas these days ain't like it used to be



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steveormary

04-11-2004 21:31:28




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 Re: Re: Re: Re: Spark Plug Questions in reply to BJ, 04-11-2004 14:54:57  
JKC When I still had tractors I found that if I put Sta-Bill in the gas I didnt get fouled plugs. Also used hotter plug. Champion D 21 I think.



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