Honda ignition problem

tinkergene(4)January 24, 2010

my cousin has a 20 hp? Honda in his Melroe side by side. and when it gets to -20 below in Mn. One plug fires good but the other doesn't I have to set the gap on the plug just about 3 hairs thick to get it to run, When it warms up outside, the spark is back to normal, he said the ign system has one coil with 2 plug leads going to the plugs. So that elimates a bad coil, I replaced the Plug end of the wire, and that is a copper core, any idea's?

-Gene-

Thank you for reporting this comment. Undo
tomplum

If it were me, I would put a spark tester on the affected cylinder to determine the strength of the spark. Or basically have you compared spark between the 2 sides? New plugs or swapped them?

    Bookmark   January 25, 2010 at 12:21AM
Thank you for reporting this comment. Undo
tinkergene(4)

Tomplum- - I have changed the plugs,That didn't work. So then when it

was running, I checked the spark on the weak side, (which is only about 1/32 of an inch) and the spark is a nice blue color, And then on the good side,the spark is about 1/4 of an inch with the 'blue' spark. I am just wondering if he was told wrong about that motor having only 1 coil ? I know that Onan has a coil that has 2 wires coming out to feed 2 cyl's,. I tried doing it with a standard coil, But as we know that electricity takes it's easiest path. UNLESS- - - the coil is going bad-and "bleeding off" on the good cyl, (overlap) and not going to the one on Compresson ?

    Bookmark   January 25, 2010 at 7:16PM
Thank you for reporting this comment. Undo
tomplum

So you seem to be saying that you've verified by sight the spark capabilities on each cylinder, and they are significantly different- correct? I can't claim to have tackled a spark condition on a Honda twin. It would be good to know the actual engine model #. On Honda singles, the cd that fires the coil is in the coil pack. Is the twin something different? I dunno. Utility engines many times have low oil safety switches which essentially ground the coil. One would think that would affect both cylinders.

Here is a link that might be useful: Honda manuals

    Bookmark   January 26, 2010 at 12:07AM
Thank you for reporting this comment. Undo
tinkergene(4)

Hi tomplum- I would think that the "low oil safety switch" would affect both cyl's. I will have to check with doug on the model #'s and to verify that it has only 1 coil.If it has 2,then that is why there is a difference in the spark jump lenth.

I will let you know what I come up with
-Gene-

    Bookmark   January 27, 2010 at 11:45AM
Sign Up to comment
More Discussions
Troy Bilt Pony Tiller
I have a Troy Bilt Pony Tiller with a 5 HP Briggs and...
beeer_2008
Sears air compressor engine won't run when plugged in
Sears Paint Sprayer/Air Compressor Model No. 106.153542...
Cletus77
Testing the new format X allowing multiple attachments.
I am back to two Lexan chain guides due to a chain...
loger_gw
Have you successful cut any “seasoned firewood” inside?
Have you successful cut any “seasoned firewood”...
loger_gw
Poulan Pro rear tine tiller, burnt valve??
I have a 6.5 Intec Briggs on my tiller, which is 10...
slowpoke_gardener
© 2015 Houzz Inc. Houzz® The new way to design your home™