Hello everyone,<br /><br />I've been looking for an inline spark plug tester. I thought that this would be a great tool to use to test my iginition system and spark plugs at the same time while not causing too much of a load on the entire system, and saving some time as well. The Seloc manual for my motor suggests using such a tool too.<br /><br />First of all - have anyone of you used one before and do you recommend such a tester (versus other known means)?<br /><br />Secondly, were the heck can I find one? I went to NAPA and they suggested MAC or Snap-on Tool centers...?<br /><br />Thanks all, any suggestions appreciated...<br /><br />~Andrew 