RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2001)
Fuel Boost Pump / Fuel Transfer Pump: Testing and Inspection
Boost Pressure Test
TWO pressure gauges attached at two different points are required for this test.
1. Obtain two 6828 fuel pressure test gauges (equivalent gauges are OK). Gauge Consistency Test: Connect the gauges together to a common
pressure source and verify pressure consistency of both gauges. Do this consistency test at approximately 206 kPa (30 psi). If pressures are
different, they can still be used for test. Note and record differences in pressures before testing. Make adjustments as necessary.
Fig. 2 Boost Pressure Test At Intake Manifold
2. Remove 3/4" pipe plug fitting at rear of intake manifold (Fig. 2). Temporarily replace this fitting with fitting reducer to adapt to pressure gauge.
NOTE: This pipe plug is located to front of MAP sensor. Do not remove plug to rear of MAP sensor. This is a COOLANT passage plug.
Fig. 3 Boost Pressure Test At Turbocharger
3. Loosen hose clamp and disconnect rubber signal line (Fig. 3) from 1/8" brass fitting at front of turbocharger.
4. Remove 1/8" brass fitting (Fig. 3) from turbocharger. Temporarily replace this fitting with a 1/8" "T" fitting to adapt to pressure gauge.
