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Comments about Dorman - Help Spark Plug Non-Foulers - 14mm Gasket Seat Long Reach:
I have a 1996 Mazda Protege with 150,000 miles. I replaced the plug wires and plugs. I noticed a cylinder with oil in it so I purchased the non-fouler thinking I would use it until I had a chance to make the correct repair. After driving about 3 miles the porcelain part of the plug blew out leaving the plug base in the non-fouler. This happened 2 more times with about 8 miles being the greatest distance driven before it happened. I removed the non-fouler and have been driving the car since with the occasional fouled plug.
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Q:does this go in the head & plug goes into it?
A:Exactly. It extends the plug distance from the oil, so it won't foul out and not fire.
Q:what exactly does the non fouler do?
A:you can use it if you remove the cat on your truck. put it on the end of the 02 sensor so it doesnt throw a code and run rich