Spark Plug removal for 2008

[surfcar]

Thanks again for the input! No problems with the boots coming off (after yanking them a bit). Car is running smoothly. I used NGK plugs to replace the originals. How often should the plugs be checked for deposits and wear?

[serega12]

Depends. Did you get NGK Copper or NGK Iridium?

[surfcar]

Installed the NGK Platinums---replaced the same as the OEMs

[serega12]

Why not iridium? And i thought OEM are not platinum, they're either ACDelco copper or NGK copper.

[surfcar]

The OEM plugs that were replaced were made in Korea; the new ones were products of Japan. Since this was the first time that I changed the plugs, I played it more on the conservative side, and just stuck with the part/model number. I really know nothing about the differences among the types---copper, platinum, iridium, etc.

[ontarian_frog]

i also put platinums in. They been in for 30 000 km. so far so good.

Copper plugs last about 50 000km, Platinum should last 100 000km and Iridiums should last 160 000km. I'd take platinums and iridiums out every 50 000k just to re-gap and inspect them. That'll also prevent them from seizing in the head.

[serega12]

I'd take platinums and iridiums out every 50 000k just to re-gap and inspect them...

I'm not sure I'd try re-gapping the iridiums. you're running a chance of breaking off the sharp point...

[ontarian_frog]

I'd take platinums and iridiums out every 50 000k just to re-gap and inspect them...

I'm not sure I'd try re-gapping the iridiums. you're running a chance of breaking off the sharp point...

shouldn't have any problems with the right tool... paid about 5$ for mine.

[serega12]

will the gap really change over time? what would cause that?

[ontarian_frog]

will the gap really change over time? what would cause that?

everytime the spark plug fires, a tiny amount of the tip vapourises, over millions of cycles, the gap will increase... copper vapourises faster than platinum and iridum...