ok heres the story, i went on a 5 hour trip on friday, i did tranny flush and oil change, and took off then when i was coming back on sunday my check engine turned on, my engine lost a lot of h.p. the car didnt want to go over 80 mph.
engine codes:
p0301 cylinder 1 miss firing
p0302 cylinder 2 miss firing
p0304 cylinder 4 miss firing
p1300 miss fire code

the guy from autozone told me it could be my spark plugs, coils, spark plug wires. what do you guys think it is. while you guyz are replying to me im going to go take out my spark plugs to revise them.

 

Do exactly what the autozone guy said..

spark plugs, spark plug wires, distributor cap, rotor...

Those are the number1 cause for misfires.

 

is there any way to find out exactly what it is with out changing everyhting?? what should i do first??