Okay, when you do a flow return test in each injector look to see how much is it dripping or is there more of a flow if there is a more of a drip the injector is leaking. Also did you have black smoke when you raise idle at the exhaust?
Also drain your fuel filter in a clear clean container to see if there is metal shavings.
This sounds like you have.9 to 1.0 injectors are dripping more than they should. Look to see if there is black smoke at the exhaust, if there is smoke find the injector that drips' more and replace it. And re do test flow return, if you metal shaving. There is failure at the injection pump.
Monday, March 1st, 2021 AT 8:46 AM