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I have a 2001 Ford Focus with a manual transmission and the code I got at O’Riely’s #1 cyclinder missing. I have already replaced the plugs and wires. more about the car on post June 29 2010

How about a compression test?

I enter the code incorrectly PO301

I get 30 highway and around 23 city mpg

sticky valve?

What would a compression test show?