Dodge D250 1990 Service Manual page 155

Troubleshooting Logic
Page9A-l6
Base Engine Components
DODGE Turbo Diesel
Low Power (Continued)
Cause
Correction
High Pressure Fuel Leak
Inspect/Correct Leaks in the High
Pressure Lines, Fittings Injector Sealing
Washers or Delivery Valve Seals.
Inspect/Correct Leaks in the High
Pressure Lines, Fittings Injector Sealing
Washers or Delivery Valve Seals.
OK
inadequate Fuel Supply Check the Flow Through the Filter to
Locate the Source of the Restriction.
OK
High Fuel Temperature
Verify that Fuel Heater is Off During
Warm Weather. Check for a Restricted
Fuel Drain Manifold (Robert Bosch VE).
OK
t
Poor Quality Fuel / Fuel Contaminated
with Gasoline
Verify by Operating From a Temporary
Tank With Good Fuel. Check for
Presence of Gasoline. Replace
Fuel/Water Separator Filter.
OK
t
Air Leak Between the Turbocharger
and the Intake Manifold
Check/Correct Leaks in the Air
Crossover Tube, Hoses, Gaskets,
Around Mounting Capscrews, or
Through Holes In the Manifold Cover.
OK
t
Exhaust Leak at the Manifold or
Turbocharger
Check/Correct Leaks in the Manifold
or Turbocharger Gaskets. Look for a
cracked Manifold.
OK
•
Malfunctioning Turbocharger
Inspect/Replace Turbocharger.
OK
J (Continued)