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#1
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I hate Champion plugs, years ago when I worked on cars, it was not uncommon to get two bad champion plugs out of a pack of four plugs. Since i started working on boats, I started using NGK. I have never(26 years) run across a single NGK plug that was worn out. I've seen them fouled by gas, oil, and water, but never worn out. If you ever drop a champion plug(non copper core) it usually breaks in half. I've tried to break a NGK and all they would do is break the porcelain off and bend over. Ive run back to back test with Chanpion vs NGK plugs in a 225 looper and made more power with the NGk on a K&O dyno(yes, i know they don't recommend anything but Champion due to electrical interference). Champion plugs rust quick in a salt environment compared to NGK or AC(autolights are the worst about this). Champion plugs run like crap in a 2.4/2.5 merc(run good in a 3.0L).
But even after all this, I'd have to agree that in some motors(mostly OMC) Champion seem to run better. Run the projected tip plug that Ferm recomended 
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#2
03-04-2014, 10:19 PM
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Point - counterpoint.
__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#3
03-05-2014, 11:13 AM
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I don't know Jack Chit, but I've always run Champions in the old Johnson/Evinrude stuff like I'm told to.
I've noticed a lot of Japanese stuff runs the NGKs. I have Bosch and NGK in my 2 stroke lawn equipment and the Bosch seems to foul a lot. Never had an NGK foul.
__________________
1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20 Last edited by bradford; 03-05-2014 at 11:27 AM.
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#4
03-06-2014, 07:54 PM
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I just put the champions back in... The std low-cost one l77jc4. Not looking to drop $50 on plugs.
So it's pretty unanimous that going to a hotter plug is not a good idea? I mostly run at about 4000 rpm or more (running to the fishing grounds or pulling a tube with kids on it), but do a lot of idling through all the ICW no wake zones and other stuff... 10 minute idle just to get into the waterway.
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#5
03-06-2014, 09:01 PM
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do a decarb treatment(use your old plugs) then run some yamaha ring free in your tank
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#6
03-06-2014, 10:59 PM
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the hotter plug comes in IF and ONLY IF you have a fouling problem that is found NOT to be caused by mixture or timing being out of adjustment... If you run it and never have any issues then you don't need hotter pugs... ALSO I ALWAYS carry an extra set of gapped plugs and a wrench to change them when running a 2smoke
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