You MUST See This To Believe It!

PTmowerMech

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Pretty cook homemade device for testing and maybe even fixing fouled plugs.

 

Hammermechanicman

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If you really want to test a spark plug you need a tester like this. It is used to test and document aviation plugs. No offense but the box the guy sent taryl is just a spark box. Actually kinda useless an it doesn't test plug under compression.
 

PTmowerMech

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If you really want to test a spark plug you need a tester like this. It is used to test and document aviation plugs. No offense but the box the guy sent taryl is just a spark box. Actually kinda useless an it doesn't test plug under compression.

$1865 to test spark plugs?

Taryl's fixed 5 out of 5 of his old fouled out plugs. I'm not sure what compression has to do with the way the plug sparks.
 

Hammermechanicman

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Not to make this a TLDR. Aircraft spark plugs are very expensive.

When doing aircraft annual inspection the plugs have to be tested and documented and the champion machine is what you would use. Overkill for a mower shop where you just change a $2 plug if there is any question vs $$$ to change aircraft plugs.

Plugs that work in air may misfire under compression.
 

bertsmobile1

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Back in the bad old days the common trick to clean a carbon fouled plug was to start the engine then run it as fast as it will run then pull the plug leads off 1 at a time and hold them up to 1" off the end of the plug till the engine ran properly
 

Honest Abe

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Not to make this a TLDR. Aircraft spark plugs are very expensive.

When doing aircraft annual inspection the plugs have to be tested and documented and the champion machine is what you would use. Overkill for a mower shop where you just change a $2 plug if there is any question vs $$$ to change aircraft plugs.

Plugs that work in air may misfire under compression.
sounds more like the wrong plug is installed if it's misfiring under compression...
 

Honest Abe

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Pretty cook homemade device for testing and maybe even fixing fouled plugs.

that guy is a nitwit, i.e. "this was homemade, there's no brand name, etc."; hmmm, maybe he could have just looked at that shiny silver metal manufacturers label under his right hand that says: Jefferson Electric Luminous Tube Transformer. Maybe he should just find himself a real vintage Champion spark plug tester/cleaner. Maybe.....
 

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PTmowerMech

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Well......... I thought it was neat. Especially the way it seem to fix bad plugs.
 
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