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Sparkplug non-foulers, Oxygen sensor

chicagochuck

chicagochuck

New member
I have used these before on oxygen sensors. I am trying to use it on an Alero oxygen sensor. The sensor threads into the exhaust fine as well as the non-fouler. But the oxygen sensor will not screw onto the De-fouler. Which I think is weird.

Maybe they are threaded the same? I wonder if I could hammer it on past the first thread, and it would work?
 


Make sure that the sensor is not hitting inside the non-fouler. Stopping it from threading on...or you may need one that has a longer non-threaded spout
 
Did you drill out the non fouler? I had to use two on my post-cat o2. Drill out one with a 1/2" bit and screw the o2 into that one, screw that assembly into the other non fouler, and pop that whole assembly into the hole.

It works very well, I've had a high flow cat for two months now and no codes have been thrown.
 
Yes I drilled it. It was hitting the inside of the non-fouler, the new oxygen sensor's tip was longer than the older oxygen sensor. I will need an extended one for it to work.
 


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