Posted by RAB on May 21, 2008 at 15:23:46 from (205.188.117.74):
In Reply to: no Spark to Plugs posted by Jim Bevins on May 21, 2008 at 04:14:56:
Jim,
As I read your post, it appears there is absolutely nothing wrong with your ignition spark, production-wise. The problem is in the distribution to the plugs - ie the distributor.
I am presuming you had a fat blue spark when it actually quit? You are referring to the high tension spark? The one from the coil centre plug-lead type wire. That means your points etc and coil are OK. If you did not check for spark when it actually quit there could be these other issues, but if there was a high tension spark it must be one of these two components - cap or rotor.
There may be an issue with ballast resistor etc but if the spark was there, up to the distributor cap, they are a side issue.
If you are referring to low tension electricity as 'spark to the distributor', disregard the above and start checking from the basics.
So, IF you have a good high tension spark going into the distributor it must be getting 'lost' in the distributor cap or rotor. There are no other parts in this section, unless all the spark plug leads and plugs have failed all at the same time!!
While I can understand that some posters are not real good at describing the symptoms and exactly how/when things were checked, we can only comment/reply on the information you have given. It is a shame that some replies are laying red herrings along the way, so if you think your initial post was not accurate, update it with more information. We want you to find the fault and fix it.
I would initially go with a shorting rotor as my first guess as you are likely to see tracking lines or cracks in the distributor cap.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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