Hey Scotty, I have a 2002 Lexus RX300 with 200k miles. I have a misfire in cylinder 4, I replaced the coil, fuel injector, and spark plug and all the parts that were replaced are working fine and it…

LexusTexas

Hey Scotty, I have a 2002 Lexus RX300 with 200k miles. I have a misfire in cylinder 4, I replaced the coil, fuel injector, and spark plug and all the parts that were replaced are working fine and it still has a misfire and idles rough. This happened 5 days after an oil change and the oil change place used almost 6 quarts of oil. What are your thoughts?