Fiat Bravo Service Manual page 411

Bravo-Brava
!
§ I
D
Engine
Fuel system
10.
ANOMALY
Engine misses when
idling
Uneven idling w i t h en­
gine warm
Engine runs irregularly
or misses
CAUSE
Fuel outlet and inlet fittings on in­
jection pump exchanged
Incorrect injection pump setting
Injection order does not corre­
spond to combustion order
Air in fuel system
Fittings loose, leaks from pipes,
pipes broken
Injectors defective or excessively
dirty
Incorrect injection pump setting
Tank ventilation defective
Fuel delivery and return lines on in­
jection pump changed over
Air in fuel system
Fuel filter blocked
Fittings loose, leaks from pipes,
pipes broken
Fuel and injection lines blocked or
restricted
Water in fuel
Incorrect injection pump timing
Injectors defective or excessively
dirty
Incorrect injection pump setting
REMEDY
Fit fittings correctly
Check injection pump setting at
test bench
Fit pipes from pump to injectors in
correct order
Bleed and eliminate air leaks into
system
Tighten fittings and eliminate leaks
Clean injectors, check and/or re­
place
Check injection pump setting at
test bench
Check tank ventilation
Fit fittings correctly
Bleed and eliminate air leaks into
system
Replace filter
Tighten fittings and eliminate leaks
Check lines: repair or replace
Drain water from filter
Restore correct injection pump
timing on test bench
Clean injectors, check and/or re­
place
Check injection pump setting at
test bench
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