I need some advice ... i keep getting code p0300 random misfire?
i just recently swapped out my engine . i have a ford mustang V6 3.8l engine. i found a engine that has only 55,00 miles on it but it was a 1997 and my car is a 1996. i asked around and multiple people told me that they were the exact engine and i shouldn't have a problem with it. once i threw the engine in there it ran find for about 3 weeks. but just recently i got a code p0300 random misfire. what should i do and were should i start?