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External
Since: Oct 23, 2007
Posts: 4
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(Msg. 1) Posted: Tue Oct 23, 2007 9:31 pm
Post subject: Two spark plugs - One cylinder
Archived from groups: alt>motorcycles>yamaha (more info?)
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Two spark plugs - One cylinder
I have a circa 1970 Yamaha 175 enduro motorcycle that has one
cylinder, but two spark plugs. I've never had a spark plug wire on
the 'other' plug and it's run just fine. Now, many many years later,
I'm trying to fix this bike up for my son and I'm wondering, "What the
heck is this other plug for???" I don't even think there is another
wire.
Thanks much for any help you can provide. |
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External
Since: Feb 03, 2006
Posts: 2
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(Msg. 2) Posted: Wed Oct 24, 2007 6:31 pm
Post subject: Re: Two spark plugs - One cylinder [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Hi
IMHO,one will be for gentle off road use,the other for fast road
use..simply swap the plug lead to the one that suits what it's being used
for.
The other idea may be to run two identical plugs on a coil with 2
outputs...twin plugging the head helps with combustion etc
"Fargen Bastage" <suminonb.TakeThisOut@tching.com> wrote in message
news:h28th3t33t1f0k8nd58bi8o1bl8qgbokqq@4ax.com...
> Two spark plugs - One cylinder
>
> I have a circa 1970 Yamaha 175 enduro motorcycle that has one
> cylinder, but two spark plugs. I've never had a spark plug wire on
> the 'other' plug and it's run just fine. Now, many many years later,
> I'm trying to fix this bike up for my son and I'm wondering, "What the
> heck is this other plug for???" I don't even think there is another
> wire.
> Thanks much for any help you can provide. |
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External
Since: Nov 03, 2007
Posts: 2
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(Msg. 3) Posted: Sat Nov 03, 2007 11:30 am
Post subject: Re: Two spark plugs - One cylinder [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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the idea was years ago that if one plug fouled out you could just put
the plug wire on the other plug and life would be good again,,,,it
really didnt work that good though because the plug that wasnt fireing
would usualy be fouled also,,,,,,,,,,,,,,tom >> Stay informed about: Two spark plugs - One cylinder |
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External
Since: Nov 03, 2007
Posts: 2
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(Msg. 4) Posted: Sat Nov 03, 2007 12:30 pm
Post subject: Re: Two spark plugs - One cylinder [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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the idea was years ago that if one plug fouled out you could just put
the plug wire on the other plug and life would be good again,,,,it
really didnt work that good though because the plug that wasnt fireing
would usualy be fouled also,,,,,,,,,,,,,,tom >> Stay informed about: Two spark plugs - One cylinder |
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External
Since: May 18, 2004
Posts: 3
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(Msg. 5) Posted: Tue Jan 01, 2008 10:30 am
Post subject: Re: Two spark plugs - One cylinder [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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yes indeed, I remember once needing to use the other plug and it was fouled
although in those days plugs just "gave up" through use and at least the
other worked, if messy. By that takes me back.
Shawn (all the more reason to love 4-strokes) XT 500
"THOMAS KRISE" <hrlylvr_80.TakeThisOut@msn.com> wrote in message
news:5277-472CCC6E-8251@baytvnwsxa001.msntv.msn.com...
> the idea was years ago that if one plug fouled out you could just put
> the plug wire on the other plug and life would be good again,,,,it
> really didnt work that good though because the plug that wasnt fireing
> would usualy be fouled also,,,,,,,,,,,,,,tom
> >> Stay informed about: Two spark plugs - One cylinder |
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