MSD 6Al
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MSD 6Al

  1. #1

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    Angry MSD 6Al

    I went out to the lake yesterday for the frist time this year. the boat was running pretty good. after about an hour of run time the msd box stop gaving power to the coil. has any one had this prob. thaks

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  3. #2
    Senior Member Need4Speed77's Avatar
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    I haven't had that problem personally but I have read that many guys have had the same problem. That is why I carry a spare. I am sure there will be others that will chime in.

  4. #3
    mo balls than $cents$ IMPATIENT 1's Avatar
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    check your grounds, its has to be absolutely clean and tight! also, if you don't find anything there, try runnin it and wiggle'n the red and black heavy gauge wires goin into the box, sometimes they're cold soldered and crack. if that's the case, just pop off the back cover, resolder the wires to the board. easy peasy japaneseaaseeeee

    Dare to be different, if it turns out great you can claim you planned it that way.

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  6. #4
    Boat Nut sleekcrafter's Avatar
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    90% of MSD failures are from bad connections, me personally never had a MSD failure in 15 years. A few friends had issues, tracked problems to bad power or ground source, which can take out a box.
    Upper Midwest Power Boat Association
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  7. #5

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    thanks guys, I checked all the connections today and they all have a good power or ground source. ill have to try to move the ground wire back and forth and see what that does. It lost power when we was idling through a cove

  8. #6
    Senior Member cave's Avatar
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    When my 6AL took a dump the engine would backfire at 1st then the poping at around 3k. Then the box died. I sent it to MSD and they fixed the problem for 40 sumthing bux plus shipping. I carry a spare now. Either in the boat or in my Truck.
    BAd Ground got mine. You need to remove the connection and clean it once in a while.

    Try this link
    http://www.msdignition.com/RMA_step0.aspx/
    Takin it home

  9. #7

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    My poped a few time, thought bc i just advac. the timing a little, so i backed it off and the popping stop then i came in to the cove and the box stoped. i have the power going to the battary and the ground to the motor, shound i take the ground to the battary too.

    Quote Originally Posted by cave View Post
    When my 6AL took a dump the engine would backfire at 1st then the poping at around 3k. Then the box died. I sent it to MSD and they fixed the problem for 40 sumthing bux plus shipping. I carry a spare now. Either in the boat or in my Truck.
    BAd Ground got mine. You need to remove the connection and clean it once in a while.

    Try this link
    http://www.msdignition.com/RMA_step0.aspx/

  10. #8
    I'm No Expert Shaun's Avatar
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    Remember the MSD box's do not supply power to the coil 100% of the time, they only hit the coil when the pickup gets triggered. To test your box, unhook the pickup wire and bridge the two wires together. When you do this the coil should fire. You may want to pull your main dist wire (the ones that runs from the coil) off the dist, stick a screw driver in it and set it close to the block. This will give the arc some where to go, also you will be able to hear and see it. It's loud, if it's firing you'll know.

    ...... or just have your dad hold it

  11. #9
    I'm No Expert Shaun's Avatar
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    here... this is the docs on the 6AL box, it has the testing instructions in it.


    http://www.msdignition.com/uploadedF...uctions(1).pdf

  12. #10
    Senior Member cave's Avatar
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    Good point Shaun. I also had a pickup go bad in the distributor. 20 bux for a new one. In the pic you can see this is cracked. hard to see when its installed in the dizzy.

    Of course I found this after I bought the new 6al box, rotor and cap. That's how I now have a spare.
    Takin it home

  13. #11

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    Go to MSD forumns seems like they have problems with that box. I have been useing their product with no issues.

  14. #12
    Classic Hotboater! GasGuzzler's Avatar
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    Quote Originally Posted by Shaun View Post
    here... this is the docs on the 6AL box, it has the testing instructions in it.


    http://www.msdignition.com/uploadedF...uctions(1).pdf
    Take the coil wire off and place it close to a ground and touch the white wire to a ground and you should get a spark if the box is ok. If your dist. has some age on it you may want to check it.

  15. #13
    I'm No Expert Shaun's Avatar
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    Owww, forgot about a problem i had. Apparently MSD had some problems with a rotor run and the metal tab that touches the cap was too low, basically the tap should try to push the cap off the dist. I had this problem and i ended up burning off the tab on the cap enough to where the engine ran like shit. Now i always pull that tab up and make sure it's pushing the cap off the dist.

    Talking to MSD is going to be pointless, they are going to tell check ground, this runs too long, that runs not right, etc... they are only good if they have the box in hand to test.

  16. #14

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    Thats true, however there are some good guys that chime in with better advise

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