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Anti Foulers

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Anonymous-0

Well-known Member

Has anyone out there had any experience good or bad with anti-fouling attachments which go on sparkplugs. Thanks.
 
I used to rig up something to make the fire to jump a small gap, oh, .125 or so and that will prevent plugs from fouling.
 
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Anti foul adapters do indeed help prevent oil fouling of spark plugs but they are becoming difficult to find.

Prior to rebuilding the engine, I used anti foul adapters for several years on an 8N engine that was worn badly enough that it would blow oil out of the crankcase breather and foul plugs within an hour or so of sandblasting or replacement of the plugs.

After installation of the adapters, the engine never again fouled a plug in the two or three years that I continued to use it before rebuilding the engine.

Dean
 
i used them years ago in some junk i was running as a teenager, they do work to keep the plugs from fouling, recomended to used only in half of the engines cylinders, if you have a 4 or 6 cylinder engine you will notice some power loss
 
When I was a kid, there was an old timer that I made hay for who used a shirt button to make an anti-fouler. He'd cut the copper plug wire and tie each cut end onto a hole in the button. Spark would jump across to the other hole/wire. It was an H or C International. It fascinated me that the fuel dripping from the leaky sediment bowl gasket never ignited the whole time we were using it.

He had some other "inventions" that were questionable - like the elevator that would shock your socks off if you touched it.

But he was a nice old guy who paid fairly and fed us well.

Paul
 
I have had more then one tractor come in with them on and I take them ff and use a hotter plug and never had problems doing that. Ya they work but so does a hotter plug
 
i've used em plenty of times in the past...never noticed any loss of power mainly because rings were so far gone engine didnt have much power to start with.
 




Dad used to make them out of a piece of broken plastic folding rulers. Drilled two holes a bit apart, used tops of old plugs for contacts.
 
After reading the posts above, I feel compelled to clarify my post immediately above.

Anti foul adapters are threaded metal adapters that thread into the the spark plug hole in the cylinder head and into which the spark plug threads. They work by increasing the operating temperature of the spark plug several heat ranges such that the increased temperature helps to PREVENT oil fowling of the plug. They are remarkably effective.

Spark gap devices that are installed in series with the plug wires are an entirely different device that work by causing the ignition system to develope a higher secondary voltage before the spark occurs. The higher voltage is more likely to produce fuel ignition with a midly fouled spark plug. These devices are completely ineffective with badly fouled plugs or without good spark plug wires, rotor, distributor cap, etc.

Neither device produces a power loss, all else being equal.

Dean
 
Run Autolite 437 or 3116 plugs with solid core wires. Run the water temp at 195F. Use a low ash SF-2 straight weight 40wt oil intended for a two stroke detroit diesel. Clean the airfilter. Lean the idle and main mixture to the point of almost starting to miss and loose power. Load the engine instead of putting around. Rev the engine instead of idling around.
Odds are 99% the plug fouling will go away and "farmer fixes" won't be required.
 
Be careful with heat ranges. Too cold and they foul. Too hot and things can get ugly. My experience is one heat range is usually ok though.
 

They are make'n a come back,,, they work well at the downstream O2 sensor to move the sensor out of the zaust stream and fool the o2 monitor into think'n the converter is clean'n up thangs... I hear of this never tried it :wink:
 
G I have a good one for you. Got a tractor in this summer and it had the antifoulers on it but the funny thing is it also has about 2-4 qts to much oil in in so pretty much figure the guy who owned it caused his own problems and so far since I took the fouling things off and drained some oil they plugs have been just fine
 
The ones that move the plug out of the cylinder sometimes work but I have not had much luck with them. Maybe the engines I tried them on where too far gone.
As for the kind that cause the secondary spark. I used to see quite around here made out of a corn cob. You just hollowed out the center of a corn cob piece about 1 1/2 inch long. You then removed the plug wire and stuck the corn cob on the spark plug and then stuck the wire in the hole in the end of the cob. It would make the spark jump the separation distance. Makes the voltage higher.
 
I worked with a mechanic one time that tested for numerous things on a no power complaint. Turned out the owner had twice as much oil in it than necessary and the crank had to slug through the overfill. Expensive oil change.
 
(quoted from post at 08:07:13 10/30/10) The ones that move the plug out of the cylinder sometimes work but I have not had much luck with them. Maybe the engines I tried them on where too far gone.
As for the kind that cause the secondary spark. I used to see quite around here made out of a corn cob. You just hollowed out the center of a corn cob piece about 1 1/2 inch long. You then removed the plug wire and stuck the corn cob on the spark plug and then stuck the wire in the hole in the end of the cob. It would make the spark jump the separation distance. Makes the voltage higher.
Click to expand...

sparktester.jpg
[/img]
 
Ya G funny how to much oil in an engine can cause some funny problems and of course not enough oil can cause you to loose a good engine. I still remember the lady who walked into a gas station years ago and said can you go get my car and fix it. They asked her what happened and she said the oil light came on. They then asked if she pulled-it over when that happened and she said no I kept driving it. They then asked what happen after that and she said it just up and died on her and would not do any thing after that. When they pulled it in they found a locked up engine
 
Threaded type would have to reduce compression ratio since you are adding volume to cylinder. Sure looks like that would reduce power but maybe not much. Now consider if you are using 8 of these at once. Mathmaticians ready your pencils!
 
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