1A-53 Engine General Information and Diagnosis:
Surge – Engine power
variation under steady
throttle or cruise. Feels
like vehicle speeds up
and down with no change
in accelerator pedal
Leaky or loosely connected high-tension
cord (for M16 engine)
“High-Tension Cord Removal and Installation
(For M16 Engine): in Section 1H”
Faulty spark plug (excess carbon
deposits, improper gap, burned
electrodes, etc.)
“Spark Plug Inspection: in Section 1H”
Variable fuel pressure
“Fuel Pressure Check: ”
Kinky or damaged fuel hose and lines
Faulty fuel pump (clogged fuel filter)
Malfunctioning EGR valve
“EGR Valve Inspection: in Section 1B”
Poor performance of MAF sensor
“Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Inspection: in
Section 1C”
Faulty fuel injector
“Fuel Injector Circuit Check: ”
Faulty ECM
Faulty electric throttle body assembly
“Electric Throttle Body Assembly On-Vehicle
Inspection: in Section 1C”
Faulty accelerator pedal position (APP)
sensor assembly
“Accelerator Pedal Position (APP) Sensor
Assembly Inspection: in Section 1C”
Excessive detonation –
Engine makes
continuously sharp
metallic knocks that
change with throttle
opening. Sounds like pop
corn popping
Faulty spark plug
“Spark Plug Inspection: in Section 1H”
Loose connection of high-tension cord
(for M16 engine)
“High-Tension Cord Removal and Installation
(For M16 Engine): in Section 1H”
Engine overheating
Condition “Engine overheating”
Clogged fuel filter (faulty fuel pump) or
fuel lines
“Fuel Pressure Check: ” or “Fuel Pump and Its
Circuit Check: ”
Air drawn in through intake manifold or
throttle body gasket
Malfunctioning EGR valve
“EGR Valve Inspection: in Section 1B”
Poor performance of knock sensor, ECT
sensor or MAF sensor
“DTC P0327 / P0328: Knock Sensor Circuit
Low / High: ”, “Engine Coolant Temperature
(ECT) Sensor Inspection: in Section 1C” or
“Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Inspection: in
Section 1C”
Faulty fuel injector(s)
“Fuel Injector Circuit Check: ”
Faulty ECM
Excessive combustion chamber
deposits
“Pistons, Piston Rings, Connecting Rods and
Cylinders Inspection and Cleaning: For J20
Engine in Section 1D” or “Cylinders, Pistons
and Piston Rings Inspection: For M16A Engine
with VVT in Section 1D” and/or “Piston Pins
and Connecting Rods Inspection: For M16A
Engine with VVT in Section 1D”
Camshaft position control (VVT) system
out of order (for M16 engine)
“Oil Control Valve Inspection: For M16A
Engine with VVT in Section 1D”
Condition
Possible cause
Correction / Reference Item
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