cel blinking today. took it to autozone "egr isnsuficient and #4 misfire" guy at autozone said the misfire can be from the egr prob and use better gas (mid grade) after i clean intake and tb. i was just wondering is there anything else that can cause a misfire and what will it do to my engine? parking car for the rest of the week and taking the intake off and cleaning this weekend. also does everything autozone guy said sound about right? ty
