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I change spark plugs - I change my plugs every 30,000 miles spend the extra money for NGK.
Only ever buy ngk plugs and learn to read their reference chart then you will always know what plugs you can/can't use for small engines
Personally I gapped my NGK laser iridiums to .024 and I've had no issues what so over, I did however have issues with the OEM spark plugs when I pulled them out to which they were gapped at .054, which OEM spec is technically .034
I swear by NGK
Apart from that, NGK is my go-to brand for everything they make.
NGK iridium for plugs.
I set the new ngk's i put in to 0.27 and I feel a difference already lot less hesitation off the bottom end felt like it would almost hiccup before gaining any power with the stock plugs. now i lay into it and it just goes fairly smoothly
Just installed NGK 92274 in a 2021 Mazda 3. They are 'Ruthenium' instead of iridium, seems to be their newest plug available. Just don't touch the gap, it was perfect at .044. Runs great.
Try changing out the rs7 plugs and go to NGK R7437-9 or 8. I’ve heard the RS7 plugs having issues in these cars.
Don't think the platinums give much of a performance advantage and they foul faster if you've got any oil burning going on...
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