Honda Spark Troubleshooting

Main Motorcycle Forum - Motorcycles and related products and laws. 

Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Honda Spark Troubleshooting wyosteven 04-30-2007
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by wyosteven on April 30, 2007, 11:36 am
Greetings,
I am currently trying to resurrect a 1979 Honda CB125 (6v ignition)
and am having difficulty with the spark. I'm new to motorcycles and
have done the usual "guesswork". Anyway, the points were screwed up
and I replaced the unit and am now trying to figure out what else
could be the culprit. I've heard coil from everyone, however coils
rarely go south and I'm unfamiliar with how one goes to check one
out. I've done the traditional "hold the finger on the lead"
technique and it has juice, however when one holds the plug on the
outside of the block I only "see" a spark every 10-20 revs of the
kickstart... I've also done the traditional ether and hillside
coasting method to no avail... the engine simply doesn't want to
fire. I do however get the neutral light to blink when kicking so I
know there is juice... however nothing (to my knowledge) getting to
the plug (consistently). SO! What techniques does anyone recommend
such that I can narrow this down before investing in a coil? Is there
any way to test the coil and if so how?

Any insight from you older gear-heads is MUCH appreciated!

Regards,

Steven


Posted by Rayvan on April 30, 2007, 12:16 pm
> Greetings,
> I am currently trying to resurrect a 1979 Honda CB125 (6v ignition)
> and am having difficulty with the spark. I'm new to motorcycles and
> have done the usual "guesswork". Anyway, the points were screwed up
> and I replaced the unit and am now trying to figure out what else
> could be the culprit. I've heard coil from everyone, however coils
> rarely go south and I'm unfamiliar with how one goes to check one
> out. I've done the traditional "hold the finger on the lead"
> technique and it has juice, however when one holds the plug on the
> outside of the block I only "see" a spark every 10-20 revs of the
> kickstart... I've also done the traditional ether and hillside
> coasting method to no avail... the engine simply doesn't want to
> fire. I do however get the neutral light to blink when kicking so I
> know there is juice... however nothing (to my knowledge) getting to
> the plug (consistently). SO! What techniques does anyone recommend
> such that I can narrow this down before investing in a coil? Is there
> any way to test the coil and if so how?
>
> Any insight from you older gear-heads is MUCH appreciated!
>
> Regards,
>
> Steven

The green neutral light needs to be lit up all the time. Not just
while kicking. Replace tha battery, it's dead. I'll bet it fires right
up after that.
--
Rayvan


Posted by Stephen Cowell on April 30, 2007, 6:28 pm


....

>> SO! What techniques does anyone recommend
>> such that I can narrow this down before investing in a coil? Is there
>> any way to test the coil and if so how?

> The green neutral light needs to be lit up all the time. Not just
> while kicking. Replace tha battery, it's dead. I'll bet it fires right
> up after that.

You need a voltmeter... this is a basic tool for
troubleshooting electrical stuff. You should be
able to get one for $15 that can read your battery
voltage, coil/points closed/open, etc. Coils are
tested with ohmmeters, this comes with the
voltmeter.
__
Steve
'06 FXDI
KI5YG
#0627
.



Posted by BryanUT on April 30, 2007, 6:33 pm

>
> The green neutral light needs to be lit up all the time. Not just
> while kicking. Replace tha battery, it's dead. I'll bet it fires right
> up after that.
> --
> Rayvan
>

I don't think old 6v Hondas need the battery to start.

The OP might try the VJMC.ORG mailing list.



Similar ThreadsPosted
Honda CB 750 with No Spark May 1, 2007, 7:53 am
intermittent spark- weird September 13, 2007, 4:47 am
Two spark plugs - One cylinder October 23, 2007, 9:11 pm
Do these spark plugs look worn? March 10, 2008, 11:31 pm
Bike won't start...no spark!!! April 23, 2006, 10:18 pm
Spark Plug Question (Again!) November 7, 2008, 8:56 am
Anybody "key" their spark plugs to squeeze out more performance? June 18, 2007, 1:17 pm
Yamaha 185 spark issues... Solenoid? March 18, 2007, 7:52 pm
Basic Spark Plug Questions April 22, 2008, 10:19 pm
Spark Plug Installation Stories November 8, 2008, 11:46 pm

Contact Us | Privacy Policy

XML SitemapXML Sitemap