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Hi everyone, after my 16 z51 was running like complete crap, I pulled out my spark plugs and replaced them. Car runs great now but noticed that 2 spark plugs had the tips broken off. See pics attached (3rd plug to the right for reference of a regular spark plug that came out).
how worried should I be?
Car has 60k miles, long tubes w/ x pipe, Vararam cai, and e85 tune. I do push the car regularly which I am assuming caused this issue.
Can't tell if those burned off or broke off, but those little pieces of electrode won't do the cylinder walls any good. If they actually broke off, hopefully they blew out quickly. Would it be worth while to have a look with a scope?
You need to scope all of your cylinders. You burned the tips of plugs off from a very lean condition. As bad as they are you may have damaged your pistons and valves as well.
Agreed, they appear burnt off, NOT broken. Given this and your mods, I think it's safe to say you're lucky if it's still running right with new plugs. I've no idea who did your tune but when I've been racing and seen plugs like that, it was all too often a prelude to further disaster if fueling was left as is.
With your mods and your pics I would go to a tuner ... that knows how to tune these cars. Something is very wrong there for a simple modded car.
Who did the tuning ?
C7 z51 broken spark plug tips!!
with what Elmer posted. Time to get your tune checked over.
