Coil Problem?please don't chew my a**

[kellydee]

Please dont chew my a** for asking an automotive question here.I mean a coil is a coil,right?Been to a couple auto forums,Can't wait 24 hrs for an answer.Anyways,Pulled my coil to test and here's what I get supplied 12v to +,set coil on battery with tower about 1/4" from the neg post.When I touch the neg wire(from coil) to the neg post on the batt,no spark from tower,good spark from wire to post.Internally shorted coil?Gotta get this ***** back on the road for my guys(employees) so I can get back on my boat project.Gotta get her back on the water.Always something taking my time.Don't ya wish you could buy that(time)?? I sure do! Jerry

 

[SuzukiChopper]

Re: Coil Problem?please don't chew my a**

Break out the ohm meter and start taking measurements.

Page 3 of this might help: http://www.google.com/url?sa=t&ct=r...vj8bQYja4V-SLjENA&sig2=DDyWKR5xeHwQ94ElDe_zQg

and this might help:
http://en.allexperts.com/q/Motorcycle-Repair-837/Testing-coil.htm

 

[bruceb58]

Re: Coil Problem?please don't chew my a**

When you disconnect the coil's ground is when you should get your spark.

When you ground the coil, you are essentially creating a magnetic field. Removing the ground causes the field to collapse and that is why the spark is produced out the secondary.

 

[Reel Poor]

Re: Coil Problem?please don't chew my a**

When you disconnect the coil's ground is when you should get your spark.

When you ground the coil, you are essentially creating a magnetic field. Removing the ground causes the field to collapse and that is why the spark is produced out the secondary.

It's also going to be a low KV spark too. Not a very good way to test a coil.

 

[kellydee]

Re: Coil Problem?please don't chew my a**

Thanks guys,I got it.It's the coil.weak spark at the secondary until I took it off the motor and laid it on the floor mat,then strong spark.Internally shorted.New coil and she fired right up.Thanks much and now,back to the boat! Jerry