Testing a coil

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1955fle
Posts: 167
Joined: Mon Feb 26, 2007 10:50 pm
Bikes: 1955 FL
1973 FLH
Location: Mass

Testing a coil

#1

Post by 1955fle » Sat Jan 24, 2009 1:46 pm

I have a '55 FL and believe that the coil is not producing. Is there a way to test it? If it is bad is there a good source to replace it?

Thanks
Carl



haggis
Posts: 158
Joined: Fri Mar 19, 2004 3:35 am
Location: Maine USA

Re: Testing a coil

#2

Post by haggis » Sat Jan 24, 2009 5:38 pm

1955fle, the common way to do it is to swap it out with a known good one, are you getting spark? You could try an Ohmeter across the primary and secondary windings, (not sure what the readings should be, Kell would probally know this) but if you are getting continuity at least you know the windings are not open. Also as has been said before temperature can had an effect on function, it can short or open at temp. As for sources for new I've had good luck with JP cycles stuff(which is probally Taiwan Ted) ,but there are other sources too. Haggis

kell
Posts: 369
Joined: Sat Jun 19, 2004 2:58 am

Re: Testing a coil

#3

Post by kell » Sat Jan 24, 2009 10:12 pm

I think it's supposed to be just over 4 ohms on the primary.
Edit: I just realized you probably have a six-volt bike. I think they take a 1.2 ohm coil.

1955fle
Posts: 167
Joined: Mon Feb 26, 2007 10:50 pm
Bikes: 1955 FL
1973 FLH
Location: Mass

Re: Testing a coil

#4

Post by 1955fle » Sun Jan 25, 2009 12:23 am

Thanks for the reply. I checked the coil with an ohms meter and do have continuity. I am now thinking that I have a bad plug wire. I have ordered a new set and will try again once they arrive. -Carl

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