ZZ8 Spark Plugs

[aroton]

Does anyone have a reference to a guide to do the ZZ8 spark plugs? A lot of material's on zz6, but i'm coming up empty on the ZZ8.

This round i'm having the dealer do it, but they charge around $900 for the swap which seems a little steep for basically needing them done 1-2 times a season (every 100 hours)

[MN Ryan]

Sorry, I don't have any advice, but every 100 hours? From my interpretation of the PCM manual, it recommends replacing plugs every 250 hours.

p38: https://pcmengines.com/wp-content/up...ers-Manual.pdf

[aroton]

It's what the dealer mentioned "100 hour or annually whichever comes first."

I'm doing the first change at around 200 hours so i'll ask to see the plugs of course. But, it was a surprise when they told me I needed to do it every 100 hours.

[MN Ryan]

100 hours seems ridiculous.

[srock]

What type of plugs are these. Iridium?

[aroton]

I think they are Iridium. Here is the set SPARK PLUG KIT, LT4 ZZ8 and they have the 41-128 stamp on them so I assume they are these: ACDelco Professional Iridium Spark Plug 41128 | O'Reilly Auto Parts

[XBIGPUN66]

Seems like the dealer loves the gravy..