Charging Wire
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Charging Wire

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    Default Charging Wire

    About a year ago I routed my charging wire from the alternator directly to the starter. It used to run to the terminal block. My question is can this be fouling plugs and if so do i need to go hotter or colder. I never fouled a plug before i made the change, now it fouls one or two plugs whenever it feels like it. I am running a MSD ignition. The plugs are NGK 5BPR5ES

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    gn7
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    Quote Originally Posted by SBS933 View Post
    About a year ago I routed my charging wire from the alternator directly to the starter. It used to run to the terminal block. My question is can this be fouling plugs and if so do i need to go hotter or colder. I never fouled a plug before i made the change, now it fouls one or two plugs whenever it feels like it. I am running a MSD ignition. The plugs are NGK 5BPR5ES
    You need to look somewhere else for the problem. Its not because you have the alt wire on the starter. You shouldn't be fouling NGK 5s either. What do the plugs look like when you say they are fouled.
    Coil or coil wire could be going south. Wouldn't be the first time.



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    Quote Originally Posted by SBS933 View Post
    About a year ago I routed my charging wire from the alternator directly to the starter. It used to run to the terminal block. My question is can this be fouling plugs and if so do i need to go hotter or colder. I never fouled a plug before i made the change, now it fouls one or two plugs whenever it feels like it. I am running a MSD ignition. The plugs are NGK 5BPR5ES
    First question I have to ask, is the MSD box connected DIRECTLY to the battery as they state in their instructions? They are super finicky about voltage.

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    Yes it wired directly to the starter, and It has a stock coil not MSD. I always thought a coil worked or doesn't work.

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    Quote Originally Posted by obnoxious001 View Post
    First question I have to ask, is the MSD box connected DIRECTLY to the battery as they state in their instructions? They are super finicky about voltage.
    It is going to the starter not directly to the battery.

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    gn7
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    Quote Originally Posted by SBS933 View Post
    It is going to the starter not directly to the battery.
    Move the MSD to the battery.
    Coils go can and usually do, go bad slowly. Coil wires take a dinger long before the spark plug wires do. Dumb the coil. MSD makes an "E" core coil that is reasonble cheap.
    Cheaper than the High Vibration can coil and will last alot longer in a boat.
    If the coil you have is a oil filled stock type can coil, there is a good chance you have rattled the spool enough to create a short in it. It will still spark, but much weaker.
    MSD Blaster SS Coils 8207 - SummitRacing.com



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    Last edited by gn7; 02-06-2013 at 06:02 PM.

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    Quote Originally Posted by gn7 View Post
    Move the MSD to the battery.
    Coils go can and usually do, go bad slowly. Coil wires take a dinger long before the spark plug wires do. Dumb the coil. MSD makes an "E" core coil that is reasonble cheap.
    ....But I think you would agree, CHEAP and IGNITION don't belong in the same sentence. Out in the middle of the lake is not the place to be relying on cheap parts.

    As much as I see guys on here throwing dead MSD boxes across the room, I don't see why there aren't more HEI units being used? I've had a module die at about the 10 year mark, but other than that - never been stranded by one. Is the MSD really doing ANYTHING for this guy? Doesn't seem so.
    Quote Originally Posted by gn7 View Post
    EFI is the wave of the future. There can be no denying it. Electronics have been on the leading edge of our entire lives. Not only os the magneto dead, but the standard issue CDI is wavering. Its all about total fuel, air AND spark control. Anybody that thinks its not has their head up their ass.


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    Quote Originally Posted by gn7 View Post
    Move the MSD to the battery.
    Coils go can and usually do, go bad slowly. Coil wires take a dinger long before the spark plug wires do. Dumb the coil. MSD makes an "E" core coil that is reasonble cheap.
    The coil is in the Dist. cap, so no wire. I can run wire to the battery easily, it has been going to the starter since i got the boat 5yrs. ago and I never had a problem before. I always had Autolite racing plugs until i had some head problems that killed one at the river and had to go to these NGKs. I guess i can make one change at a time and see which one solves it. Thanks for the input.

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    Along with the head repair i had the carb rebuilt, I had a stammer hitting the secondaries and fattened it 1 step and got rid of it. I can smell some raw fuel now on the low end, I'm wondering if this could be a problem also. The plugs sure don't run as brown as they used to though, not like it's running rich but the raw fuel is a tell tell to lean the primaries. I'm guessing this is gonna be something simple

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    Check your plug wires with a dmm. Put the leads on booth ends and wiggle. Shouldn't change. Then Run one lead on an end and the swipe long the side with the other end. Shouldn't get any readings.
    Are he plugs the same heat range as before?

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    Quote Originally Posted by SBS933 View Post
    Along with the head repair i had the carb rebuilt, I had a stammer hitting the secondaries and fattened it 1 step and got rid of it. I can smell some raw fuel now on the low end, I'm wondering if this could be a problem also. The plugs sure don't run as brown as they used to though, not like it's running rich but the raw fuel is a tell tell to lean the primaries. I'm guessing this is gonna be something simple
    Is this a vac secondary or a DP?
    You had a stumble getting into the secondaries, so you fattened the primary main jet?



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    Quote Originally Posted by gn7 View Post
    Is this a vac secondary or a DP?
    You had a stumble getting into the secondaries, so you fattened the primary main jet?
    No vac. sec. Yes i called the carb. shop from the river and they told me to go up 1 step on the secs. and it got rid of the stammer

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    Quote Originally Posted by Beer:30 View Post
    ....But I think you would agree, CHEAP and IGNITION don't belong in the same sentence.
    I said REASONABLY cheap. I don't consider a 45.00 coil a pile of shit. Its possibly one of the better coils you can use with a MSD in a boat. I could list 5-6 other coils that cost more and would last 1/5th the time. Most of them from Mallory.
    I agree, if you can clear an HEI, its probably the best ignition you can use for a N/A deal.

    Hang in there Beer, in a couple more posts you can tell the guy how to fix it with a 15,000.00 EFI system!

    Quote Originally Posted by SBS933 View Post
    The coil is in the Dist. cap, so no wire. I can run wire to the battery easily, it has been going to the starter since i got the boat 5yrs. ago and I never had a problem before..
    So you have a MSD HEI, not a MSD box ignition. There are worse places to pick up power for a HEI, but directly to the battery is usually best for the power fed wire.

    Quote Originally Posted by SBS933 View Post
    No vac. sec. Yes i called the carb. shop from the river and they told me to go up 1 step on the secs. and it got rid of the stammer
    You say "carb shop". As in the shop you took the carb to, or "The Carb Shop" in Ontario Cal?

    Never heard of fixing a stumble on a vac secondary by richening up the main jets, UNLESS IT NEEDED IT. doesn't sound like more fuel is what it wanted ALL THE TIME. Want it needs is more RPM before the secondaries open. Want it really wants is a heavier spring in the secondary vacuum motor(pod)



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    Last edited by gn7; 02-06-2013 at 07:04 PM.

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    Quote Originally Posted by gn7 View Post
    I said REASONABLY cheap. I don't consider a 45.00 coil a pile of shit. Its possibly one of the better coils you can use with a MSD in a boat. I could list 5-6 other coils that cost more and would last 1/5th the time. Most of them from Mallory.
    I agree, if you can clear an HEI, its probably the best ignition you can use for a N/A deal.

    Hang in there Beer, in a couple more posts you can tell the guy how to fix it with a 15,000.00 EFI system!


    So you have a MSD HEI, not a MSD box ignition. There are worse places to pick up power for a HEI, but directly to the battery is usually best for the power fed wire.


    You say "carb shop". As in the shop you took the carb to, or "The Carb Shop" in Ontario Cal?

    Never heard of fixing a stumble on a vac secondary by richening up the main jets, UNLESS IT NEEDED IT. doesn't sound like more fuel is what it wanted ALL THE TIME. Want it needs is more RPM before the secondaries open. Want it really wants is a heavier spring in the secondary vacuum motor(pod)
    Yes it was the Carb Shop in Ontario, not an expert but it did work

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