In my blazer, this always meant Spark Plugs-about every 12K miles.
How many miles are the Focus Plugs good for?
I have no maintenance record as I bought this car used.
Some of the other posters are talking about a DPFE sensor?(the guy whose
engine was missing 3 times a second), would this be the culprit if spark
plugs are supposed to last longer?
Could it be temp related? My Blazer alway ran rougher in the winter.
Thanks.
--
Dan
2003 2.0L ZX5 23K Miles Sagria Red VA - USA
"Those who forget history are condemned to repeat it" - George Santyana