vs
Spark plug Denso or OEM Mazda
Spark plugs, coolant exchange, transmission drain/fill, brake fluid flush, and air filter replacement, stat.
Vehicle:
Mazda 6
I recently was having a misfire in cylinders 2/3, and new plugs and ignition coils cleared it up.
Pros: cleared up misfire
My RX8 also got pretty piss poor compression numbers. The only time it struggled with a start up was with literally the original 20 years old plugs it came with and I had to do multiple hot starts. It still started and carried on.
Pros: still started and carried
Cons: piss poor compression numbers
Vehicle:
Mazda
Mileage: 30000 km
At around 120,000 KM plan for spark plugs. It's easy, especially if you get a 1/4" torque wrench and 14mm 1/4 deep well socket.
Pros: easy to replace
Vehicle:
Mazda 3
Mileage: 120000 km
DENSO ZXE24HLR7 is also an excellent OE plug.
Pros: excellent OE plug
Part number: ZXE24HLR7
Denso 3289 is what I run.
398k on the clock, like 50k on these plugs, she runs clean and smooth.
Pros: runs clean and smooth
Mileage: 50000 km
Part number: 3289
Denso for my runner
Vehicle:
Toyota 4runner
I already replaced the spark plugs with the Denso ones I listed though... Is this bad?
Vehicle:
Lexus
Mileage: 60000 km
The previous owner had installed some Denso IKH24's that looked..... disgusting. In fact, I have NO CLUE how the car ran as well as it did, as the tips from the Denso plugs were gone, and the gap was 0.055. The car still had a slight miss after I did the coils last month which prompted me to replace the plugs.
Cons: disgusting appearance, tips gone, wide gap, slight miss
Vehicle:
Kia
Part number: IKH24
Ive got the densos twin tips in a vxr at present. One thing i can tell you is they dont like heat!!! i recently had a small coolant leak and they would misfire. pretty low heat resitance i think. work fine on cooler engines.
Pros: work fine cooler engines
Cons: dont like heat, misfire
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