Ford 2007 WQ Fiesta Repair Manual page 432

303-00-1 0 Engine System
-
General Information 303-00-1 0
DIAGNOSIS AND TESTING
Symptom
Very poor power output or fuel
consumption too high or engine
running rough
Possible Sources Action
Fuel system. CHECK the fuel system.
REFER to:
Fuel Charging and Controls
(303-04 Fuel Charging and
Controls
-
1.25L Duratec-1 6V
(Sigma)/l.4L Duratec-I 6V
(Sigma)/l.GL Duratec-1 6V
(Sigma), Diagnosis and
I
Testing),
Fuel Charging and Controls
(303-04 Fuel Charging and
Controls
-
1.3L Duratec-8V
(Rocam), Diagnosis and
Testing),
Fuel Charging and Controls
(303-04 Fuel Charging and
Controls
-
I .4L Duratorq-
TDCi (DV) Diesel, Diagnosis
and Testing),
Fuel Charging and Controls
(303-04 Fuel Charging and
Controls
-
1.6L Duratorq-
TDCi (DV) Diesel, Diagnosis
and Testing).
Engine intake air system.
CHECK the intake air system.
REFER to: lntake Air Distribu-
tion and Filtering (303-12
lntake Air Distribution and
Filtering, Diagnosis and
Testing).
Exhaust system blocked.
I
CHECK the exhaust system.
REFER to: Exhaust System
(309-00 Exhaust System,
Description and Operation).
Engine management system. CHECK the engine manage-
ment system.
REFER to: Electronic Engine
Controls (303-1 4 Electronic
Engine Controls, Diagnosis
and Testing).
Fault in ignition system (petrol
engines only).
CHECK the ignition system.
REFER to:
Engine lgnition (303-07 Engine
Ignition, Diagnosis and
Testing),
Engine lgnition (303-07 Engine
lgnition
-
2.OL Duratec-HE
(M14), Diagnosis and
Testing).
2006.0 Fiesta
1212006 GI 52554en