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  1. #11
    Frequent Poster Sev1n's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    its not getting a reading. 9/10 the yamaha coils fail on the secondary side(the wires get pulled out of the coil.)

    Dont throw the old one away there are people who rebuild them.

  2. #12
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Thanks Sev1n. Say hi to Eric Burton for Tim and Pam if you come across him.

  3. #13
    Frequent Poster Sev1n's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Quote Originally Posted by E350 View Post
    Thanks Sev1n. Say hi to Eric Burton for Tim and Pam if you come across him.

    he stops in our dealership a few times a week, will do. He built my sxr1100 i just got

  4. #14
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Sev1n: Expect long life with your new ski!

    Cleaned it up, installed new battery, drained and replaced the fuel, Pam road it for the first time in nearly 20 years yesterday -- runs like a top, dry as a bone:

    DSC03498-sq.jpg

    Thanks for your help with the Superjet.
    Last edited by E350; 07-12-2017 at 12:36 AM.

  5. #15
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Ok I bought this coil on ebay. It says it is manufactured by Yamaha:

    s-l200.jpg

    It tested out of spec and I have requested a return to the seller.

    Resistance on Primary coil is: 1.0 Ω
    Spec is: 0.078--0.106 Ω
    Resistance on Secondary coil is: 5.74 Ω
    Spec is: 3.5--4.7 Ω
    BOTH ARE OUT OF SPEC !

    Looking at it, it also is deficient in that it does not have the rubber grommets on the spark plug wires to keep the E-Box water tight. What gives?

    WHAT IS THE BEST COIL FOR A 1994 SUPERJET 701cm?

    I have an in-line ignition tester kinda like this:

    s-l225.jpg

    When I use it on the 550sx, the tester flashes when I try to start the engine.

    When I use it on the Superjet with either the new or the old coil, it does NOT flash when I try to start the engine.

    I love this Inova 3420 powered test light. You hook it up to the battery and go around and touch stuff with it.

    s-l400.jpg

    When I touch the orange/red wire going to the coil on the primary side (coming from the CDI?) it flashes when I try to start the Superjet engine. So, doesn't that mean that my CDI is ok and the coil I bought is the problem?

    BTW, I did all the testing above with the kill switch coupler (plug) disconnected to make sure that I did not have both a defective coil and a defective kill switch.

    SO, IS IT THE COIL? AND IF SO, WHERE CAN I BUY THE BEST COIL FOR A '94 SUPERJET?

    Thanks in advance guys.

  6. #16
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Ok I bought this coil on ebay. It says it is manufactured by Yamaha:

    s-l200.jpg

    It tested out of spec and I have requested a return to the seller.

    Resistance on Primary coil is: 1.0 Ω
    Spec is: 0.078--0.106 Ω
    Resistance on Secondary coil is: 5.74 Ω
    Spec is: 3.5--4.7 Ω
    BOTH ARE OUT OF SPEC !

    Looking at it, it also is deficient in that it does not have the rubber grommets on the spark plug wires to keep the E-Box water tight. What gives?

    WHAT IS THE BEST COIL FOR A 1994 SUPERJET 701cm?

    I have an in-line ignition tester kinda like this:

    s-l225.jpg

    When I use it on the 550sx, the tester flashes when I try to start the engine.

    When I use it on the Superjet with either the new or the old coil, it does NOT flash when I try to start the engine.

    I love this Inova 3420 powered test light. You hook it up to the battery and go around and touch stuff with it.

    s-l400.jpg

    When I touch the orange/red wire going to the coil on the primary side (coming from the CDI?) it flashes when I try to start the Superjet engine. So, doesn't that mean that my CDI is ok and the coil I bought is the problem?

    BTW, I did all the testing above with the kill switch coupler (plug) disconnected to make sure that I did not have both a defective coil and a defective kill switch.

    SO, IS IT THE COIL? AND IF SO, WHERE CAN I BUY THE BEST COIL FOR A '94 SUPERJET?

    Thanks in advance guys.

  7. #17
    PWCToday.com Is My Home Away From Home
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    I have never had a coil go bad but had a few pulse and trigger coils go out. I would think you need a working stator for the test light to work. You can buy a 61x stator for 50$, Good luck.

  8. #18
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Well I just bought a new old stock Yamaha manufacture and brand Superjet coil on ebay for $90. Of course it was only after I purchased it that I saw that Blowsion and Amazon sell an MSD coil for $125. This is what Amazon says about it:

    "Molded in 8.5mm super conductor wires
    Output voltage 30KV
    Primary resistance .08 ohm
    Secondary resistance 2K ohms
    Includes mini-stripper crimper"

    https://www.amazon.com/MSD-4294-Powe...AZWQESG6AGC0YB

    If it is really true, good for them for building a coil with a specified ohm number for each of the resistances instead of a range. I have no idea what the output voltage on the stock Yamaha coil is so I can't compare whether what Blowsion says can be true or not:

    "More juice for your powerplant than any OEM coil can provide. New Updated model! Fits all years Yamaha Superjet 650/701/760, and Kawasaki 750 and 800 SXR."

    https://www.blowsion.com/msd-improved-coil-kawiyam


    ANYBODY HAVE EXPERIENCE WITH THE MSD COIL?

    Other suggestions?
    Last edited by E350; 07-15-2017 at 12:04 PM.

  9. #19
    Resident Guru bored&stroked's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    Either run an oem coil or take the chance with the MSD. They are better no doubt, but their quality control in the last 5yrs has dropped measurably and they fail much more often these days because of it.
    '90 Superjet: ported 760, dual 44's, B pipe, ADA head 190psi, TDR waterbox, hooker 10-16, sponsons. Girlfriends ride
    '94 Suuuperjet: 718cc, pro tec pipe, Groupk head 175psi w/protec girdle, protec ride plate, MSD coil, UMI grate, Roundnose pole -4", rev footholds, sweet green turf and wrap.
    '95 Raider 701: Fiberglass not SMC, Hydrotrailer hitch, ugly purple and yellow everywhere.

  10. #20
    PWCToday Guru E350's Avatar
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    Re: Crank No Start No Spark Troubleshooting Decision Tree '94 701 SN SJ

    boredandstroked: Thanks for the advice, other than the "bling" associated with a having a billet distributor, for my '95 Bronco distributor (rebuild) I chose NOS OEM to swap gearing to rather than go with a MSD aftermarket distributor.

    $90 for a NOS OEM seems reasonable because there is another NOS OEM Superjet coil listed on ebay for $190.

    I will report back when I get it.

    BTW, I looked into swapping a coil from our 440, 550, or 650 engines, but apparently they are not a separate "component" per se so swapping is not really an option.

    (I guess I could look up the resistance specs on the Bronco coil and if they match, swap it in. But I think I better leave that vehicle alone since it is now running like a top!)
    Last edited by E350; 07-15-2017 at 03:19 PM.

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