Re: Re: Ferguson 6V coil -TEA20
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Posted by Jay Cunningham on August 20, 1998 at 17:54:19:
In Reply to: Re: Ferguson 6V coil -TEA20 posted by Jim WI on August 20, 1998 at 11:02:01:
Thanks for the feedback. Another strange thin I noticed in working with the tractor tonight. When the starter cranks, there is only a faint spark visible off the coil wire as I ground it against the block. There is no spark noticeable when I do the same thing with a plug wire. I also do not see any sign of a spark when I put a n inductive timing light pickup around the coil or spark plug wire. when the tractor is running the light picks up well on all the wires. Another strange thing is that the tractor will not catcth when the starter is cranking. It only catches when I let go of the starter switch. Shouldn't I get the same spark during starting?
: Is the engine running when you check the voltage at the resistor? If so, most meters will indicate about 12 volts. : The proper check is with the engine stopped but the ignition switch on. If you turn the engine with a wrench you should find a spot where the points are closed. With the points closed you should see something around 4 volts at the resistor. When the points are open you'll see the battery voltage. : If you can't find a spot where the voltage drops at the resistor you've either got an open coil or points that aren't closing. Since you say the engine runs (although roughly) you might have worn or misadjusted point or a coil that's on its way to dying. : Post back what you find. : PS: Yes, there are 12 volt coils available -- some still require resistors, some don't.
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