How often do you clean and rotate your plugs?

[peevee]

Title says it all. We've been waiting until about 75 to 100, that might be too much.

[KSMooniac]

Tempest fine wire plugs...look at them at annual and put them back in.

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[Guest]

Once per year for the 16 fine wire plugs

[Bob_Belville]

28 minutes ago, KSMooniac said:

Tempest fine wire plugs...look at them at annual and put them back in.

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Ditto. (I fly 60-80 hours per year.)

[peevee]

Fairly sure ours are fine wire. I don't think anyone would put massives in a turbo but you never know. I'll know for sure when I clean them.

I'll stick to twoce a year, once at annual and once mid way I guess.

[Hank]

I do my massives every annual, and sometimes check them at oil change in between. Since moving to a field with no services, I no longer have access to a plug tester, so the best I can do is clean and gap them right now. 

[StevenL757]

1 hour ago, KSMooniac said:

Tempest fine wire plugs...look at them at annual and put them back in.

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Agree.  I spend a good amount of time cleaning  and inspecting them yearly, and replace any having cracks in their ceramic cores.  Also no need to rotate iridium fine wires.  You pretty much put them in and they just...work.  :-)

[peevee]

Well, I'll get the p/n and if they're fine wires maybe just leave them be 

[Bob_Belville]

8 hours ago, StevenL757 said:

Agree.  I spend a good amount of time cleaning  and inspecting them yearly, and replace any having cracks in their ceramic cores.  Also no need to rotate iridium fine wires.  You pretty much put them in and they just...work.  :-)

I rotate fine wires. Either the Tempest site or Mike Busch has pics of asymmetric erosion of electrodes which differs with polarity.

[Bob_Belville]

9 hours ago, Hank said:

I do my massives every annual, and sometimes check them at oil change in between. Since moving to a field with no services, I no longer have access to a plug tester, so the best I can do is clean and gap them right now. 

I check plug resistance with a simple multimeter. 

If I were running massives I might have to invest in a resistance tester! 

 

 

[Hank]

Multimeters are fine, the "Plug tester" that I no longer have access to checks their ability to produce spark with compressed air blowing across them, from the same air supply that the other side of the tester uses to blast glass beads into the electrode and then clean the glass beads out. One big box, with two places to screw in a spark plug [clean, then test].

[blaine beaven]

I clean and rotate my massives at 50hrs. I do about 75-100 hrs a year. I've only had my plane for 3 years, but judging by what's in the logbooks the spark plugs have 700hrs in them, and seem to be in great shape.