HELP ENGINE MISFIRE
 

two days ago i added injection cleaner on empty tank then i start to add premium gasoline until it became full, then i parked the car, next day i found check engine light on with code p0304 and their is a car had rough hesitate, i start to drive it and it become smooth and fine and check engine light diapers.

Today when i start my engine it hardly start with check engine light and it has codes p0300, p0302 and p0304 and after drive it for 1 mile it become smooth again but still check engine light on.... any suggestion please.....

c230 2006 v6 109,000 Mileage

Thanks

did you solve this?

check codes
 

you can get free help from most auto part stores orileys autozone advance auto ect
check codes and google the make model and year and code or codes
i had same isues got 5 and 6 misfire code but also p2006 a intake maifold isue
good luck:)