Spark plug spacers

Trapper D

Member
I was spending time with the 8N today and pulled a few plugs just to check them out. They had a lot of oil on them but I have had no problem starting or with fowling of the plugs. I realize there may be bigger issues but was wondering if you could use spacers to hold them out a little farther? I know they make them just did not know how everyone felt about the idea. Just asking. Thanks
 
I've used anti-foulers on severely worn engines before.
They work Ok as far as I can tell.
But, if its not fouling the plugs I wouldn't bother for now.
I would buy a new set of Autolite 437 plugs and put them in.
Clean the old ones and keep them as spares.
Rotate and clean as needed.
 
Spark plug anti-foul adapters will work miracles in worn engines that oil foul plugs but there is no reason to use them if your engine is not fouling plugs without them.

I've not bought a set for 20+ years, nor have I seen any for nearly as long.

Anyone know if they are still sold?

Dean
 
The last spark plug spacers we bought were from NAPA

Normally they are only used as a temporary bandaid to keep the tractor running until you can tear it down and repair the problem.

used if you have a cylinder that is pumping oil for some reason that shortly kills a spark plug.

The guy at NAPA said to never use them on more than half of the cylinders at any one time.?????

As others have said, ask your auto parts dealer, you may be able to buy hotter plugs that will help keep the plugs clean.
 

Yes, its not uncommon to see them stacked on O2 sensors to get catalytic efficiency codes to pass... Its a poor mans way to prolong the inevitable...
 
Anti-foulers apparently just make the plug act like its a couple steps hotter. I heard the same thing about never using more than 2, but haven't ever heard a convincing reason why not.

BTW for years I ran two anti-foulers on my 8n, which mysteriously had good compression but a lot of oil in the cylinders, with good results - before i started using them, if the engine didn't start in the first few cranks they'd become covered with oil and I'd have to pull the plugs and clean them in gasoline in order to get it to start. However after giving the rings a good MMO soak, and putting in a new set of the "good' plugs (437s?) I was able to remove the antifoulers, and have not used them for a couple years now, and the tractor starts reliably and without fuss all the time now. Though I was going to have to do a ring job but now I think it may last me to the grave without it, as long as the MMO holds out.

Advance stores seem to for some reason have the best selection of anti-foulers at reasonable price.I tend to keep some around since they are useful for other purposes - with a bit of teflon tape, you can force a NPT threaded fitting into the antifouler, tod make all kinds of nifty gadgets.
 
NAPA has them on the wall all the time here.
surprisingly, AutoZone even has them back on that wall
of small 'help' parts

I use em on old junk that ain't worth fixing or are on the list to be fixed.
Like the other poster, they are also handy to quick-make something without ruining the head threads.
I jammed a pipe fitting into one to run a hose
straight down on a Farmall that had a broken piston skirt.
Just so I could move it around til I fixed it.
Shoulda seen the oil blowing out of that hose......
 

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