Chrysler DODGE D150 1993 Service Manual page 920

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FUEL SYSTEM 14 - 101
DIESEL FUEL INJECTION SYSTEM DIAGNOSIS-CONTINUED
SYMPTOM
CAUSE
ACTION
Engine surges at idle
Fuel injection pump malfunction or
not adjustable
Replace fuel injection pump
Rough idle when engine Is warm
Improper fuel
Air in fuel system
Drain fuel tank, flush system, fill with
proper fuel
Bleed fuel system
Low idle speed
Adjust idle speed
Injection pump rear support bracket loose Repair as necessary
Restricted or damaged injector nozzle Repair or replace as necessary
Injection sequence does not correspond
with firing order
Install injection lines in correct order
Low or uneven engine compression Repair as necessary
Fuel injection pump malfunctioning
or not adjustable
Replace fuel injection pump
Engine mines under lead
Improper fuel Drain fuel tank, flush system, fill with
proper fuel
Empty fuel tank or fuel tank vent blocked Fill tank, bleed system, check tank vent
Air in fuel system Bleed fuel system
Clogged fuel filter Replace fuel filter
Restricted or blocked fuel injection lines Remove restrictions or replace lines
Restricted or blocked fuel supply lines Remove restrictions or replace lines
Leaking injection lines, damaged lines or
loose connection
Replace damaged lines or tighten
connections as necessary.
Bleed fuel system.
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