Spark plug and gap for 2003 optimax M2 250 - Seadoo Forums

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  1. ☑ ORIGINAL POSTER #1
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    Default Spark plug and gap for 2003 optimax M2 250

    Hi

    I just bought a 2003 Utopia with a Optimax 250 engine.

    I removed a plug to check it out, it looks pretty decent no deposits. But I thought I might replace them anyway. The ones I removed are NGK PZFR5F-11. But on the NGK website it only has a listing for the 2006 model and its part number is IZFR5G.

    So anyboody know what's the proper plug and gap for my 2003 M2?

    Thanks

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  3. #2

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    Default ..........weird......

    You should be using the NGK BPZ8HS10 with a gap of .040" or 1.0mm......so, I don't know why you got different plugs in there.........

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  4. ☑ ORIGINAL POSTER #3
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    Default

    Quote Originally Posted by Skatman View Post
    You should be using the NGK BPZ8HS10 with a gap of .040" or 1.0mm......so, I don't know why you got different plugs in there.........
    Hmm... a third option, now I'm really !

    Ngk Spark Plug # 3133 BPZ8HS10
    Price Range: $6
    Product rating:
    Traditional spark plug , Applications Include : Inboard Marine MERCURY ( See Also: CCW, KOHLER, HIRTH) M2 Sport Jet 2006-2000 240 hp Outboard Marine EVINRUDE 1988-1985 275 hp Outboard Marine EVINRUDE 1995-1994 3-cyl. COM 65 hp Outboard Marine EVINRUDE 1995-1994 COM 2 cyl. 55 hp Outboard Marine EVINRUDE 1997-1985 V8 300 hp Outboard Marine EVINRUDE 1997-1989 2-cyl. 48 hp Outboard Marine EVINRUDE 1997-1994 2-cyl. 48 hp Outboard Marine EVINRUDE 1998-1985 V8 250 hp Outboard Marine EVINRUDE 1998-1989 2-cyl. 40 hp Outboard Marine EVINRUDE 1998-1989 2-cyl. 50 hp Outboard Marine EVINRUDE 1998-1991 Intruder L 150 hp Outboard Marine EVINRUDE 1998-1991 Intruder LV6 175 hp Outboard Marine EVINRUDE 1998-1993 COM 200 hp Outboard Marine EVINRUDE 1998-1993 COM L 150 hp Outboard Marine EVINRUDE 1998-1994 3-cyl. 56 cid 60 hp Outboard Marine EVINRUDE 1998-1994 3-cyl. 56 cid 70 hp Outboard Marine EVINRUDE 1998-1994 Vindicator 225 hp Outboard Marine EVINRUDE 1998-1994 Vindicator L 200 hp Outboard Marine EVI


    Judging from the above it seems that plug is for the 240 M2 Jet not the 250. The 250 is an Optimax so its a lot different than the 240 EFI.

    Too bad because they are one third the price!

    Thanks for the reply though.
    Kevan

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  5. #4

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    Default Look a bit harder....

    Sorry to disagree with you Kevin.......
    Seadoo started using the Mercury M-2 Optimax engines in it's jet boats starting in 2000. The last one used was in 2004, if I remember right. During the Mercury's run in the Bombardier watercraft, they used the 200, 210, 240 and the 250 horsepower M-2 Optimax engines. There are a few differences in them as far as stroke and compression along with the naturally aspirated carb models and the fuel injected models. But other than those few differences, the Optimax engines designed for use in the Seadoo's are basically the same.

    I did a little poking around and found that the plug you pulled, is just a more expensive plug. It's designed to provide better, more focused spark while adding to the life of the plug. The one I quoted you in post #2 is the stock plug. So, if you like the other plugs results, then you may want to keep using it but for half the price, you can get a plug that runs about the same, with no noticeable difference. As for the extended life? I change my plugs out once a season, whether they need it or not. Then, the ones I pull are rotated out with the spare (used) set I keep in the glove box. Just in case. You never know when you might foul one...........Cheers!
    Last edited by Skatman; 04-29-08 at 08:00 PM.

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