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  1. #1
    Join Date
    May 2018
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    Greenville SC
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    38

    Default 96 112spl ngk or champion plugs?

    Can somebody give me some info on which plugs are better? Ngk or champion. I ran across a thread about ngk not so good for some motors. Thanks

  2. #2
    Join Date
    Nov 2005
    Location
    Mt. Zion, Illinois,
    Posts
    825

    Default Re: 96 112spl ngk or champion plugs?

    My understanding is engines equipped with the OIS2000 ignition system don't operate well with any plugs other than the OEM spec Champion plugs. If your engine has that ignition system, stick with Champion, but if it has the standard ignition you can probably get by fine on a properly crossed NGK plug.

    It looks like the OEM spec plug is Champion QL82C (#931M)
    http://www.marineengine.com/newparts...art_num=437684

  3. #3
    Join Date
    Apr 2010
    Posts
    4,321

    Default Re: 96 112spl ngk or champion plugs?

    I'll stick with the champion as that's what the manufacture calls for.

  4. #4
    Join Date
    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    I bought some champions and put em in yesterday. I noticed the end of the ngk plugs were coming unscrewed where the plug wire snaps on. I wondered if that might have been part of the problem? Either way it has the champions in it now ,I also noticed they were solid on their end. Gonna run over to the lake in a little while and see if it runs any different with that surging at wot intermittently.
    Last edited by Tim D; 06-20-2018 at 10:52 AM.

  5. #5
    Join Date
    Sep 2010
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    ontario
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    15,548

    Default Re: 96 112spl ngk or champion plugs?

    Carburetor bowls often warp.-----Were they checked for that ?

  6. #6
    Join Date
    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    Thanks racerone, boobie and Kevin.I haven't checked that. I will soon though. Does it suck air in causing a problem? It just started giving me trouble not to long ago. It was running fine for 5or 6 trips to the lake. Then sometimes at wot trimmed out it would cut back seemed like half power. Didn't seem to do it often but would do it intermittently then go back to being fine. I have an extra set that I picked up on ebay bc I broke the primer nipple off of one when I was rebuilding them if ones warped maybe the others will be good. . Didn't know it was a replaceable part until Dan on here sent me a pair of nipples for free. Thanks again Dan if you see this.

  7. #7
    Join Date
    May 2018
    Location
    Greenville SC
    Posts
    38

    Default Re: 96 112spl ngk or champion plugs?

    Just got back to the boat ramp it started fine, got up on plane good, trimmed it out, got about 3/4 mile from the ramp started doing the same thing only this time it got worse after about 5 min with the new champion plugs in it!?!???? I also noticed the voltage meter was going to like 15v. I tried the bulb it was tight, tried to shoot gas with the primer to no avail. Any ideas?

  8. #8
    Join Date
    Nov 2005
    Location
    Mt. Zion, Illinois,
    Posts
    825

    Default Re: 96 112spl ngk or champion plugs?

    15V is not good. Maybe you have a Stator or rectifier that is going bad and breaking down once it gets hot.

  9. #9
    Join Date
    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    Would the stator cause it to run so badly? Maybe the power pack?

  10. #10
    Join Date
    Sep 2010
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    ontario
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    15,548

    Default Re: 96 112spl ngk or champion plugs?

    Not equipped with OIS system.-----Post compression values .----Does spark jump a gap of 7/16" on each lead , yes or no ?----Perhaps test run with cowling off.------Perhaps test run with a portable tank and hose.

  11. #11
    Join Date
    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    I'll double check spark and compression. It was good a couple of weeks ago. It had 120psi on 3cylinders and 125psi on the other one. It had good spark on all 4 plug wires . I'll hafta wait til my buddy gets back from the beach to get the compression checker again. I'll check spark this evening. This thing has me running in circles.I done plugs,wires, fuel line, coil packs, link and sync, it was running completely fine and then this intermitten acting up seems to do better when you don't go wot keeping it easy the past couple of times but yesterday I wanted to run it into a bridge piling. Limped back to the boat ramp when i got the trailer in the water and cranked up to put on trailer again ran fine. B.O.A.T. Break. Out. Another. Thousand.

  12. #12
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    ontario
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    Default Re: 96 112spl ngk or champion plugs?

    Orderly trouble shooting needs to be done,

  13. #13
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    May 2018
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    Greenville SC
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    Default Re: 96 112spl ngk or champion plugs?

    Lol thanks racerone. I get impatient easily.

  14. #14
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    May 2018
    Location
    Greenville SC
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    Default Re: 96 112spl ngk or champion plugs?

    Still had good compression. I know it's getting spark bc the timing light shoots fine. Don't have a spark gap checker. I'll have to make one at work this week. I'm pretty sure rectifier is shot. It's got some dark brown/black material (insulation?) Leaking out the back when I took it off the motor, and it gets hot really quick when running the motor. Gonna replace it, would that cause the voltage to build?

  15. #15
    Join Date
    May 2008
    Location
    Kent, the garden of England, UK
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    Default Re: 96 112spl ngk or champion plugs?

    Quote Originally Posted by Tim D View Post
    Still had good compression. I know it's getting spark bc the timing light shoots fine. Don't have a spark gap checker. I'll have to make one at work this week. I'm pretty sure rectifier is shot. It's got some dark brown/black material (insulation?) Leaking out the back when I took it off the motor, and it gets hot really quick when running the motor. Gonna replace it, would that cause the voltage to build?
    I dont think you have said exactly what model you have but if it has the water cooled rectifier/regulator
    then the volts should not rise in the way you describe.

    If however it only has the round rectifier
    then they will rise as it is not a regulator.

    Regarding plugs I dont think there is an exact NGK equivalent for QL82C but if you are forced to use NGK then stick to the inductively suppressed type (with a "Z" in the number ). I think BZ7HS-10 are probably the nearest ( the -10 denotes that they are supplied gapped at 1mm so will need re-gapping to 0.030") Avoid resistor plugs ie those with an "R" in the number.

  16. #16
    Join Date
    Apr 2018
    Location
    Sonora Ca.
    Posts
    52

    Default Re: 96 112spl ngk or champion plugs?

    The next time you have it in the water for "testing" do a full throttle shutdown and then pull your plugs and check for little beads of moisture on the plugs. It's possible that you have either a head or exhaust gasket leak....

  17. #17
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    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    Thanks vics. It's a 1996 evinrude 112spl. And I do have the round rectifier which I believe is just the unregulated rectifier if I understand it correctly.

  18. #18
    Join Date
    May 2008
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    Default Re: 96 112spl ngk or champion plugs?

    Quote Originally Posted by Tim D View Post
    Thanks vics. It's a 1996 evinrude 112spl. And I do have the round rectifier which I believe is just the unregulated rectifier if I understand it correctly.
    I believe 20" models have the round rectifier while the 25" models have a water cooled rectifier regulator and a higher output stator coil..... dont ask, but that's the info I glean from the parts list .. . Its for details like this that you are advised to always quote the model number.
    As far as I know "spl" does not indicate anything special about the engine. Just some fancy decals or styling.

    At least you now know that 15 volts is possible.

  19. #19
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    May 2018
    Location
    Greenville SC
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    Default Re: 96 112spl ngk or champion plugs?

    So the rectifier was bad. My tach works now, but it still had the same issue. Runs fine wot for a few min, after 10 min or so it'll cut back. Stop and try to power back up might run fine might not. After sitting it'll crank up and run fine then does it again. I've got to take the carbs off and check to see if the bowls are warped as someone suggested. And I've yet to ohm the stator or power pack. Haven't had much time due to work and Independence day coming up. BTW it seems to sit at about 2200rpms when it does it. Thought it may have been overheating and s.l.o.w. kicking in but motor doesn't buck and shudder like I've read about when that mode kicks in

  20. #20
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    May 2018
    Location
    Greenville SC
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    38

    Default Re: 96 112spl ngk or champion plugs?

    So I replaced the power pack and she runs like 's champ now

  21. #21
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    3,144

    Default Re: 96 112spl ngk or champion plugs?

    Well done, Persistence pays off, Happy boating!!

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