My mechanic told me my spark plugs were "worn to nubs" after 20k miles

I've been driving a 2012 Ford Focus for about 3 years now and always thought the rough idle was just how it was built. Last week my buddy who works at a shop in Portland finally looked at it and said the plug gaps were WAY out of spec because the factory ones are garbage. Anyone else find that newer cars use cheaper parts that just don't last compared to 90s stuff?

2 comments

2 Comments

davidh882d ago

Yep. Swapped mine at 25k and the difference was night and day.

rowanc291d ago

Did you read that article about how oil viscosity changes after like 10k miles? I saw some data that backed up what @davidh88 was saying, and it totally made me rethink my own change interval.