Engine quit running, now won't start

Scrubcadet10 said:
you have to pull it just like you would when you start it...
if you have an auto parts store near by, they should sell a spark tester.

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I like this one because it's easier to see, but i prefer ones where the spark actually has to jump a gap so you know it's a good strong spark
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Those light jobs "show" spark only. They can't put a load on the coil like the PET-4000 can and the others with the bolt that screw in and out. You need a 6mm or roughly 1/4" gap to test with. Great video here explaining it. Just like electrical circuits, need to have a load to test properly.


slomo
 
That will obviously work, but cutting up a lamp cord makes me realize I have lost sight of the bigger picture. Instead of a spark tester, in order to see if the spark plug is any good, all I really need to do is buy a new spark plug. If it doesn't work, I will get the spark tester, too, and let you know the results.
 
This is why we use various types of plug in spark testers.
The red ones are a lot easier to see but all they tell you is a spark is being generated .
The 3 point or sliding electrode type test the quality of the spark but are harder to see
When I get caught out without mine , usually because I left it behind on some ones mower, my next trick is to clamp a lock jaw plier onto the engine then force the threaded end of the plug through the handle
 
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