Cleanig spark plugs

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Model T Ford Forum: Forum 2014: Cleanig spark plugs
Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Thursday, May 29, 2014 - 10:04 pm:

best way to clean the crud off a spark plug? cabinet blaster?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Thursday, May 29, 2014 - 10:10 pm:

That will work, but don't use anything as abrasive as sand. You don't want to wreck the smooth surface of the porcelain. With X's, you can take out the porcelain and just clean the metal parts.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Thursday, May 29, 2014 - 11:06 pm:

Get one of those spark plug cleaner/blasters. We have one at the shop, does a quick job cleaning them up. I wire wheel the heavy crud off first.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Vaughn on Friday, May 30, 2014 - 12:31 am:

If you are cleaning take apart original style plugs you can clean the porcelain with comet or zud cleanser and water. These cleansers are made to clean porcelain sinks and tubs and work very well on the spark plugs. If the carbon buildup is heavy I use the cleanser and scotch-brite pads to scrub them clean. I use a round brush with cleanser on the metal housing.


Top of pagePrevious messageNext messageBottom of page Link to this message  By R. S. Cruickshank on Friday, May 30, 2014 - 04:14 am:

I turn the plug upside down and fill it with brake cleaner. I let it sit for awhile and most of the carbon crud comes off.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Georgetown TX on Friday, May 30, 2014 - 07:29 am:

I use a bit of Scotchbrite and some WD40 to clean plugs after I take them apart.



Top of pagePrevious messageNext messageBottom of page Link to this message  By Hal Davis-SE Georgia on Friday, May 30, 2014 - 07:33 am:

A wire wheel can ruin a spark plug. Learned that the hard way. This was on a plug that had no glazing on the inner porcelain part. Bit's of the wire wheel embedded into the porous porcelain (Say that 10 times real fast) and it mis-fired like you wouldn't believe.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Donnie Brown on Friday, May 30, 2014 - 09:13 am:

On the inside porcelain surface you are looking for as smooth and polished surface as possible. I sometimes glass bead them or just polish by hand. I would not use any kind of sand or rough abrasive on the porcelain. The metal parts would be OK to sandblast or glass bead. If not wanting to take the plug apart I would use nothing more abrasive than glass beads. Soda blasting or walnut hulls should be OK also. If taking the plugs apart be very carefull with the mica washers as they are hard to come by if you ruin them.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tim Wrenn on Friday, May 30, 2014 - 09:23 am:

I wash 'em out with lacquer thinner. Seems to work well, but so far I really haven't had plugs come out too gunky. Usually #1 is the dirtiest for some reason-anyone know why? That one sometimes I soak a little, but usually doesn't need much.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Todd on Friday, May 30, 2014 - 09:41 pm:

" Usually #1 is the dirtiest for some reason-anyone know why?"

It runs cooler than the others.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tim Wrenn on Saturday, May 31, 2014 - 09:26 am:

Thanks Ken!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Doug Money - Braidwood, IL on Saturday, May 31, 2014 - 11:52 pm:

Efferdent I have heard works.

I use a propane torch. Works great.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Cole ---- Earth on Sunday, June 01, 2014 - 08:20 am:

I had a couple modern Cj8's that were gunky and I have left them in the ultra sonic cleaner for a couple weeks and they get a good shaking and soaking every time I clean a carburetor. Not worth the effort on those plugs but a good experiment and if it fails not much lost.
It cleans some ok, some dont clean up at all.

I have never understood why plugs cant be cleaned by a chemical of some sort. Chemicals clean grease and gunk from the block and such if hot tanked.


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