Quote:
Originally Posted by blue62
Your going to get a ton of different opinions on both those Items.
I don't change coils unless there is an issue with them.
Such as misfires or cracks in the housing or other defects.
Something that affects their ability to work as they should.
Plugs more or less the same:
Modern day plugs last many miles.
You can pull them and check them on what ever schedule you think is effective.
But something to keep in mind:
If you pull your plugs and replace them you want to replace the "crush washer" on them.
That washer is designed to seal the plug to the head. They are a "one time use" washer.
If you reuse them over several plug changes you risk minor compression leaks that in most cases you cannot detect.
I don't know about other people but I have a very hard time finding those crush washers.
So if my engine is running right I leave things like plugs and coils alone.
I hook up my vacuum gauge, and scanner once or twice a year.
I also watch things like fuel mileage and just the way the car performs and feels.
By doing those things I know if I need to look at my plugs and or coils.
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Hi blue62,
Don't you get one crush washer with a new plug?