testing an ignition harness

[hish747]

Does anyone know how to properly test an ignition harness? Is it done with an ohm meter? Any advice would be appreciated. This is a slick 4 cylinder for a Lycoming O-320.
Thanks

 

[slacktide]

You can test for continuity of both the center conductor and the shield with just a multimeter, but you need a hi-pot tester to determine of the insulation is breaking down.

 

[PaulS]

I would use the if in doubt replace it method myself...… so glad my cars have coils on the plugs.

 

[flyingbrit]

An alternate method of checking for breakdown is this:

http://www.chiefaircraft.com/ee-e5....MIvuSGxujq3AIVg8DACh36yAQmEAQYBCABEgLMuPD_BwE

It creates a high voltage and has an arc visible in the window. No arc means your cable is breaking down.

Not as good as a real hipot tester but a lot more affordable.

 

[Bell206]

Does anyone know how to properly test an ignition harness? Is it done with an ohm meter? Any advice would be appreciated. This is a slick 4 cylinder for a Lycoming O-320.
Thanks

A megohmmeter or megger would be more practical than a hi-pot testor and is more widely used in aviation.