Suzuki WagonR+ RB310 Service Manual page 597

6-2-26 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Condition
Excessive engine
oil consumption
Engine hesitates
(Momentary lack of
response as accel-
erator is depressed.
Can occur at all
vehicle speeds.
Usually most severe
when first trying to
make vehicle move,
as from a stop sign.)
Possible Cause
Blown cylinder head gasket
Leaky camshaft oil seals
Sticky piston ring
Worn piston and cylinder
Worn piston ring groove and ring
Improper location of piston ring gap
Worn or damaged valve stem seal
Worn valve stem
Spark plug faulty or plug gap out of adjust-
ment
Leaky high-tension cord
Fuel pressure out of specification
Malfunctioning EGR valve
Poor performance of TP sensor, ECT sensor
or MAF sensor
Faulty fuel injector
Faulty ECM
Engine overheating
Low compression
VVT system out of order
Reference Item
"Valves and Cylinder Head Inspection"
in Section 6A2.
"Camshaft, Tappet and Shim" in Sec-
tion 6A2.
"Pistons, Piston rings, Connecting
Rods and Cylinders Inspection" in Sec-
tion 6A2.
"Pistons, Piston rings, Connecting
Rods and Cylinders Inspection" in Sec-
tion 6A2.
"Pistons, Piston rings, Connecting
Rods and Cylinders Inspection" in Sec-
tion 6A2.
"Pistons, Piston rings, Connecting
Rods and Cylinders Disassembly and
Assembly" in Section 6A2.
"Valves and Cylinder Head Disassem-
bly and Assembly in Section 6A2.
"Valves and Cylinder Head Inspection"
in Section 6A2.
"Spark Plugs Inspection" in Section
6F2.
"High-tension Cords Inspection" in Sec-
tion 6F2.
"Table B-3 Fuel Pressure Check" in this
section.
"EGR Valve Inspection" in Section 6E2.
"TP Sensor On-Vehicle Inspection",
"ECT Sensor Inspection" or "Mass Air
Flow (MAF) and Intake Air Temperature
(IAT) Sensor Inspection" in Section
6E2.
"Table B-1 Fuel Injector Circuit Check"
in this section.
"Overheating" in this table.
"Low Compression" in this table.
"Oil Control Valve Inspection" in Section
6E2.