So I have been doing the 5000 ohm check on plugs when doing the annuals for a few years now, I am finding a lot more failures that surprised me than what I was expecting. Now some of you may say that Champion says that it is not a valid test, but when you have an open circuit inside a plug, that is a fail.
I am not finding a lot of high ohms (especially with tempest), but I have found 3 plugs with open circuits with he fluke meter. Oh and the mil-spec for aircraft spark plugs does call out an ohm requirement for the plug. I have found 2 Champion and 1 tempest fail this way. If you have a weird miss, do a good check of you plugs, you may be surprised.
I am not finding a lot of high ohms (especially with tempest), but I have found 3 plugs with open circuits with he fluke meter. Oh and the mil-spec for aircraft spark plugs does call out an ohm requirement for the plug. I have found 2 Champion and 1 tempest fail this way. If you have a weird miss, do a good check of you plugs, you may be surprised.
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