Helpful hints to pass emissions? 7.3 Diesal, Non Turbo, Non Powerstroke.
Zero Shift 2% Opacity
40 MPH 76% Opacity
50 MPH 35% Opacity
60 MPH 04% Opacity

So far we put in new O rings on all injectors; cleaned them really good; our in a new Fuel Rail; New air filter. I have just found these hints also: but what's your experiance?

"""1. Biodiesel Run B80.
2. Leane the fuel air mixture. Adjusting the fuel injector pump is a chore. It can make the engine gutless though.
3. Prior to running the biodiesel; run Seafoam or equevalent through the tank.
4. Changed the fuel filter.
5. Checked the air filter.
6. Ran the vehicle at highway speed for 30 minutes immediately prior to the test to get it properly warmed up. """"""