Thursday, July 14, 2011
Digital Propane Injection for Dodge Cummins 12 valve ‘94-’98 Turbo Diesel Vehicles
The DPI system requires liquid propane at the regulator to function correctly. IT WILL NOT work on propane vapor. The tanks must be equipped with a liquid pickup. Be aware that some tanks only offer a vapor fitting.
Vaporizer/Regulator Component Assembly
Orifice
The Vaporizer/Regulator assembly must have some components installed prior to mounting the unit. Figure 1 shows the location of the supplied components.
1. Install the Outlet Orifice. Verify assembly is Boost inserted as shown in Pressure Port Boost
2. Install Propane Pressure Pressure Sensor.
Sensor
3. Install Fuel Pressure Figure 1 Assembling the Vaporizer/Regulator. Switch and fuel lock-off solenoid.
4. Install the 90° coolant hose elbow fittings to the regulator’s coolant inlet/outlet ports.
5. Install Fuel Line Fitting.
Mounting the Vaporizer/Regulator
1. Using the mounting bracket as a guide, drill three 5/16? holes through the front section of the passenger side fender well and fender lining.
2. Mount the bracket to the regulator.
3. Install the regulator assembly on the fender well using the supplied fender washers on the tire side of the fender well (Figure 3).
Note: Some applications may require alternative mounting. For these applications verify the regulator is mounted with the regulator inlet at the top.
4. Connect the liquid supply line to the lock off solenoid inlet.
Install the Propane Discharge Fitting
1. Remove the flex section of the air intake tube between the air cleaner outlet and the turbo inlet. Use care not to allow any foreign material to fall into the turbine inlet or air cleaner outlet.
2. Drill a 3/4” hole in air box assembly. No MAI Sensor on these applications (Figure 4).
3. Insert the Discharge Fitting in the 3/4? hole.
