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Thread: how to clean spark plugs?
          
   
   

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  1. #1
    Matt167's Avatar
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    how to clean spark plugs?

     



    this isn't for a car engine of mine ( Yet... I'm going to run 1 step colder plugs in the Falcon than the stock plugs, so I know I'm gonna foul them from time to time ). my dirtbike, loves to foul sparkplugs, some of it's my fault. I run the oil mixture a little high in the gas, so I'v fouled the plug a few times, oil fouled it, and even after cleaning it, I can never get it to spark again, always just put a fresh 1 in. if it's just gas fouled, or just lightly oil fouled, to the point it will still run, I put it under the flame on the stove, and it fixes the problem. what can I do to clean the plug off? at school we sandblast, but at my house, my blast cabinent is filled with 20/40 Black Diamond, a little course for a spark plug I think. at school we have some extremely fine blasting sand. I'v seen those air compressor powered " Spark Plug Cleaners " but do they work? I run NGK BR8- ES in it.
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

  2. #2
    DennyW is offline Junior Member Visit my Photo Gallery
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    ((I'v seen those air compressor powered " Spark Plug Cleaners " but do they work?)) Yes they do. I have one in my tool box still.

    Burning them on the stove will not do the job. You have to use a small propane torch to clean it back to white. Using a sand blast is ok, but remember, if you rough up the porcelin, it holds carbon, and will foul quicker the next time.

  3. #3
    Matt167's Avatar
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    never thought about propane torch. I'v got 1. I'll have to give that a shot. thanks for the help.
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

  4. #4
    76GMC1500 is offline CHR Member Visit my Photo Gallery
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    It depends on what is fouling the plugs. If you have a bad right side crankcase seal on your dirtbike and you're sucking aluminum powder laced oil into the combustion chamber, there is no way to clean the plug. But, since this is for the car, the torch does work. However, at less than $2 a piece, it seems more economical to just buy new plugs.

  5. #5
    DennyW is offline Junior Member Visit my Photo Gallery
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    Quote Originally Posted by 76GMC1500
    It depends on what is fouling the plugs. If you have a bad right side crankcase seal on your dirtbike and you're sucking aluminum powder laced oil into the combustion chamber, there is no way to clean the plug. But, since this is for the car, the torch does work. However, at less than $2 a piece, it seems more economical to just buy new plugs.
    It's on a Sunday and everything is closed, or you live 20 miles, or even 10 miles from a store. That $2.00 won't help a bit.

    there is no way to clean the plug.

    That's not true with my 2 cycle weed eater, which is an oil mix. They burn nice and white clean. Oil or not, it burns the what you call it's off, hydro carbons ?
    Last edited by DennyW; 05-28-2007 at 06:13 PM.

  6. #6
    pat mccarthy's Avatar
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    run them thru the dish washer

  7. #7
    Matt167's Avatar
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    well guys. Torch worked. had to do it 3 times. after I did it the first time, It did fire but it ran very weak, and only ran for a minuite. the second time, it sounded ok, I put it in gear, got it going, and a few feet from where it started, it died. the third time, I really made shure it was as clean as I could get it. got it started, was running ok, so I put it in gear, and took off. spark was very weak at first, almost couldn't keep it running, but I kept it at a throttle position that it would stay running, and eventually, I was able to wind it up and put it in second, and altho it wasn't running the best at that point, I just kept with it, and the spark plug cleaned itself off. I bought a new plug, NGK-BR8- ES today, went to pull the cap off the top that is supposto screw on ( my bike cannot use plugs with them on, plug wire won't fit it ) and ended up pulling the center shaft out of it, took a good look at this 1, and it has a non removable cap. only $2.00 with tax.
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

  8. #8
    DennyW is offline Junior Member Visit my Photo Gallery
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    So, did you waste 2.00 on that one ?

  9. #9
    thesals's Avatar
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    what kind of bike you have, i know NGK makes capless plugs for both my yamaha's.... btw a good way to clean a plug when its fouled on a dirtbike, is blast it with some carb cleaner and while its still soaked, light here up.... can be a little dangerous, but it does a hell of a job.... trick has saved me once or twice out in the middle of the desert..... luckily i keep a can in my backpack with my other couple tools i keep....btw generally if everything is mechanically sound on a two stroke bike, the reason the plugs get fouled is from choking it for too long....other than that your carb might need a rebuild or you're mixing too much oil into your fuel.....
    just because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day

  10. #10
    Matt167's Avatar
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    Quote Originally Posted by thesals
    what kind of bike you have, i know NGK makes capless plugs for both my yamaha's.... btw a good way to clean a plug when its fouled on a dirtbike, is blast it with some carb cleaner and while its still soaked, light here up.... can be a little dangerous, but it does a hell of a job.... trick has saved me once or twice out in the middle of the desert..... luckily i keep a can in my backpack with my other couple tools i keep....btw generally if everything is mechanically sound on a two stroke bike, the reason the plugs get fouled is from choking it for too long....other than that your carb might need a rebuild or you're mixing too much oil into your fuel.....
    the bike is a '78 Suzuki DS 100. the plug I bought for it b4, I just unscrewed the cap. yeah, I ran the oil mix a little rich this last time round, that's what fouled it, I'm shure. good idea with the carb cleaner, never thought of that.
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

  11. #11
    thesals's Avatar
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    ok... i dont know my older suzukis too well.... but yeah, that carb cleaner trick works like a charm
    just because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day

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