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  #11  
Old 08-03-2012, 04:29 PM
Cub 128 Cub 128 is offline
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ok, thanks ill try those tests and report back
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  #12  
Old 08-03-2012, 04:50 PM
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jbrewer jbrewer is offline
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It had spark last week but the coil was going bad so I replaced it now no spark.
You sure you got the coil back in right? I'd check the simple things first.

Are the points opening and closing? I'd change pr adjust as few additional things as possible before checking all the basics.

How did you determine the coil was "going bad" ... spark beginning to fail?

John
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Old 08-03-2012, 05:00 PM
Cub 128 Cub 128 is offline
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You sure you got the coil back in right? I'd check the simple things first.

Are the points opening and closing? I'd change pr adjust as few additional things as possible before checking all the basics.

How did you determine the coil was "going bad" ... spark beginning to fail?

John
I heard that if the coil got really hot when it was running that it was going bad, And it was getting pretty hot.
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  #14  
Old 08-03-2012, 05:05 PM
R Bedell R Bedell is offline
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I heard that if the coil got really hot when it was running that it was going bad, And it was getting pretty hot.
Now wait a minute...........there was NOTHING said in the original post about the Ignition Coil being "hot". Are you saying now.......that the coil has been running hot....???
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Old 08-03-2012, 05:41 PM
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Here is a quick test you can perform. Take everything off the negative Ign Coil Term. Install a jumper wire on that terminal. Turn on the Ignition Switch. With the opposite end of the wire, touch the motor block (ground) momentarily, if all is well, you should see a small spark at the end of the wire and spark at the Spark Plug.



OR.....

Take everything off the negative Ign Coil Term. Turn on the Ignition Switch. Take the black or negative meter lead and attach to motor ground. With the Red meter lead, if all is well, you should have 12V at both the positive and negative terminals of the Ignition Coil.
Sound advice here and good illustrations cub 128. Really worth the investment to buy a DVOM no matter what kind you get. These checks will let the meter show you what's wrong rather than "swaptronics". I'm sure there are primary and secondary resistance readings that you can take on the coil as well to see if it is bad but again a meter is a valuable tool that saves a lot of time in troubleshooting. I have a Simpson analog and Fluke 87 that I use every day to work on electric lift trucks and its well worth the time and effort to learn how to use one for whatever electrical system you're wanting to diagnose. Just my .02.
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Old 08-03-2012, 09:28 PM
Cub 128 Cub 128 is offline
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Yeah the coils been running hot, but I got it going today. It was the points. I mowed for a couple hours and all was well except I think the engine is running hot because the carb bowl was at 157* F I don't know if that's normal or not.

Ive got all the tools that I would ever need to do anything on these just not familiar with them or battery powered ignition coils.
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