Mazda CX-9 Grand Touring 2007 Manual page 820

2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
Engine runs Acceleration/cruise
rough.
Misses Acceleration/cruise
Buck/jerk Acceleration/cruise/deceleration The vehicle
11
Hesitation/stumble Acceleration
Surges Acceleration/cruise
Lack/loss of
12 Acceleration/cruise
power
13 Knocking/pinging Acceleration/cruise
Poor fuel economy
14
15 Emission compliance
16 High oil consumption/leakage
17 Cooling system Overheating
concerns
18 Cooling system Runs cold
concerns
19 Exhaust smoke
2007 Mazda CX-9 Grand Touring
cruising.
The engine speed
fluctuates during
acceleration or
cruising.
The engine misses
during acceleration or
cruising.
bucks/jerks during
acceleration, cruising,
or deceleration.
A momentary pause at
the beginning of
acceleration or during
acceleration.
A momentary minor
irregularity in engine
output.
The performance is
poor under load (such
as power down when
climbing hills).
Sound is produced
when the air/fuel
mixture is ignited by
something other than
the spark plug (such
as hot spot in
combustion chamber).
The fuel economy is
unsatisfactory.
Fails emissions test.
The oil consumption
is excessive.
The engine runs at
higher than normal
temperature/overheats.
The engine does not
reach normal
operating temperature.
Blue, black, or white
smoke from exhaust
(See NO.11 ENGINE
STALLS/QUITS, ENGINE
RUNS ROUGH, MISSES,
BUCK/JERK,
HESITATION/STUMBLE,
SURGES [MZI-3.5].)
(See NO.12 LACK/LOSS OF
POWER-
ACCELERATION/CRUISE
[MZI-3.5].)
(See NO.13
KNOCKING/PINGING-
ACCELERATION/CRUISE
[MZI-3.5].)
(See NO.14 POOR FUEL
ECONOMY [MZI-3.5].)
(see NO.15 EMISSION
COMPLIANCE [MZI-3.5].)
(See NO.16 HIGH OIL
CONSUMPTION/LEAKAGE
[MZI-3.5].)
(See NO.17 COOLING
SYSTEM CONCERNS-
OVERHEATING [MZI-3.5].)
(See NO.18 COOLING
SYSTEM CONCERNS-
RUNS COLD [MZI-3.5].)
(See NO.19 EXHAUST
SMOKE [MZI-3.5].)