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What's Fouling?

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Pastor Scott

10-23-2001 19:32:19




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I've noticed previous posts which mentioned an engine fouling and having black stuff on the spark plug tips. What does that mean? And, how would you fix it? I have this problem with my 52 8N.




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Brads8N

10-24-2001 07:15:02




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 Re: What's Fouling? in reply to Pastor Scott, 10-23-2001 19:32:19  
Autolite 437 is a hotter plug



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Dell (WA)

10-23-2001 23:23:22




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 Re: What's Fouling? in reply to Pastor Scott, 10-23-2001 19:32:19  
Pastor Scott..... ..what snowplow sez.

Fouled sparkplugs let the sparkies leak off'n the plug center electrode and then the engine starts to miss and not develope enuff power to do the work you need done.

Most N-Engines need the hotter range sparkplug just on general usage. The factory recommended sparkplug is good if'n your plowing 8 hrs a day, which most N-users don't now adays.

But then you can buy a lot of sparkplugs for the price of an engine overhaul..... ....Dell

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DavidO

10-26-2001 05:33:26




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 Re: Re: What's Fouling? in reply to Dell (WA), 10-23-2001 23:23:22  
I agree with Snowplow and Dell. There are several different levels of severity to this problem. i.e. have to clean the plugs every 10 hours of operation vs have to clean the plugs every 100 hours of operation. If the problem is severe enough that the hotter plugs will not get rid of the problem, but the tractor still cranks and runs good when the plugs are clean, you might want to try some "non-foul" adapters. They scew into the plug hole and the plug screws into them. They offer some isolation from the oil that is getting past the worn rings. I have seen cars and tractors that had pretty serious oil fouling problems run for a couple of years with the non-foul adapters. Of course, fixing the problem is the preferred solution, but sometimes "getting by" for a few months or one more season is important. Good Luck.

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Snowplow

10-23-2001 19:44:14




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 Re: What's Fouling? in reply to Pastor Scott, 10-23-2001 19:32:19  
Generally speaking fouling refers to gook on your plugs. This can happen different ways for different reasons. (black wet gook, black char, white coating) Causes range from oil burning, rich fuel mix, to water in gas) The most common gook is the black stuff. This usually comes from worn rings which are allowing some oil to slip past and the resulting oil burn causes your plugs to foul. You probably also have a little dark smoke. The best way to test for worn rings is to do a compression test. You can address the probelm several ways (assuming you have worn rings causing plug fouling). First you can replace the rings. This is a bit of a job, and while you are there you'll want to replace all sorts of other things. $$$$ However assuming that the tractor is still performing well, you may just want to use a hotter plug, or change the plugs you use more often. Hotter plugs burn up more of the oil and foul less. I apologize but I don't have plug numbers and brands handy but I'm sure someone can tell you if you post it. Mt 51 8N has worn rings and could stand a rebuild but she will still push a pretty good pile of Maine white stuff, so I check the plugs often and keep on plowing.

Good Luck!

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