Need help on misfire

the_0utsiderMarch 2, 2013

anyone have a motor that "misfires" like mine?
If i open the throttle, it boggs down and dies.
here it is - http://www.youtube.com/watch?v=NFo4RDzbzo4

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tomplum

Does it run the same w/ the point box cover off? That cover loose and dancing around can't be a good thing...

    Bookmark   March 3, 2013 at 12:57AM
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the_0utsider

Oh yes. It does this with the cover on or off. taking it apart i just noticed that the mount for the ignition coil is movable side to side unlike typical current motors.

    Bookmark   March 3, 2013 at 10:52AM
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baymee(LehighValleyPA)

That's for the timing. How about a glowing carbon buildup under the head causing a second spark source? Did you remove the head?

    Bookmark   March 3, 2013 at 11:07AM
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the_0utsider

i opened it before running and after recoding the video. i cleaned it before i ran it and after there is very little.

    Bookmark   March 3, 2013 at 11:23PM
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1saxman

It's actually simple to properly post the link so everyone can just click on it. Look under the big message field for the 'Optional Link URL' field and drop it there.

Here is a link that might be useful: video

    Bookmark   March 9, 2013 at 5:14PM
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the_0utsider

Problem solved... turns out the coil is on backwards but somehow it ran....
Also, when i found this motor, it ran fine occassionally. Replacing the coil eliminated random days with no spark.
It all comes down to how did it run when the coil was on backwards?

Thanks !

    Bookmark   March 13, 2013 at 10:02PM
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1saxman

Maybe it was running backwards? :)

    Bookmark   March 15, 2013 at 6:03PM
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the_0utsider

some tuning later and here is the final product:

Here is a link that might be useful: briggs

    Bookmark   April 7, 2013 at 11:09PM
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