About 8 months ago I had several injectors start to go out on my '07 3500. I replaced all injectors and several months later started to have the same problems...truck has no power and runs rough..sometimes the problems seems to fix itself but now it has been acting up again..I put a second fuel filter on to try and keep trash out of the injectors..someone mentioned that my problem might not even be the injectors but that the computer might need to be flashed. Any suggestions or help would be appreciated.

 

borrow a fuel pressure tester gauge from your local auto parts store and find out how much fuel pressure you have post filter...if there is little to none, then you likely have a lift pump going out.

rail pressure gauge might not be a bad idea to get either...