Some turbo troubles are occurring in my truck. When I have ushered it to a spare part dealer BC Diesel https://www.bcdiesel.ca they asked me to replace the fuel injector. They are saying that the injector is dirty and it may cause engine detonation. Do you have any more suggestions for me? How much does it cost for a fuel injector replacement? Which is the best fuel injector for Dodge 5.9L?