Engine Mechanical: Diagnosis Suzuki SX4 I рестайлинг

Air Cleaner Filter Inspection and Cleaning

Reference: AIR CLEANER FILTER REMOVAL AND INSTALLATION

Inspection

Check air cleaner filter for dirt.

Replace excessively dirty filter.

Cylinder Block Heater Inspection (If Equipped)

Reference: CYLINDER HEAD COVER REMOVAL AND INSTALLATION

1. Check continuity between terminals "a" and "c". If there is no continuity, replace cylinder block heater. See «Cylinder Block Heater Removal and Installation (If Equipped)»(ref-514568-S01245109532012112100000) .
2. Check that there is no continuity between terminal "a" and "b". If there is continuity, replace engine block heater. See «Cylinder Block Heater Removal and Installation (If Equipped)»(ref-514568-S01245109532012112100000) .
3. Check continuity between terminal "b" and engine block heater body. If there is no continuity, replace engine block heater. See «Cylinder Block Heater Removal and Installation (If Equipped)»(ref-514568-S01245109532012112100000) .

Scheme 9

Scheme 10

Camshaft and Tappet Inspection

Reference: CAMSHAFT AND TAPPET REMOVAL AND INSTALLATION

Timing Chain Cover Inspection

Reference: TIMING CHAIN COVER REMOVAL AND INSTALLATION

Timing Chain and Chain Tensioner Inspection

Reference: TIMING CHAIN AND CHAIN TENSIONER REMOVAL AND INSTALLATION

Valve and Valve Guide Inspection

Reference: VALVE AND CYLINDER HEAD DISASSEMBLY AND REASSEMBLY

Venturi Plug Inspection

Check that venturi plug passage is not clogged.

If venturi plug passage is clogged, clean or replace venturi plug.

Scheme 11

Cylinder Head Inspection

Reference: VALVE AND CYLINDER HEAD DISASSEMBLY AND REASSEMBLY

Cylinder Head No. 1 Bolt Inspection

Reference: VALVE AND CYLINDER HEAD DISASSEMBLY AND REASSEMBLY

Note. If they are reused, check thread diameter of cylinder head No. 1 bolt (1) for deformation as follows and replace it with new one if thread diameter difference exceeds its limit.

Measure each thread diameter of cylinder head No. 1 bolt "A" at "a" and "B" at "b" using micrometer (3).

Then calculate difference in diameters (A - B).

If it exceeds limit, replace cylinder head No. 1 bolt with new bolt.

Cylinder head No. 1 bolt diameter measurement points

"a": 95.0 mm (3.74 in.)

"b": 130.0 mm (5.12 in.)

Cylinder head No. 1 bolt diameter difference (deformation)

Limit (A - B): 0.25 mm (0.0098 in.)

Scheme 12

Valve Spring Inspection

Reference: VALVE AND CYLINDER HEAD DISASSEMBLY AND REASSEMBLY

Cylinder, Piston and Piston Ring Inspection

Reference: PISTON, PISTON RING AND CONNECTING ROD DISASSEMBLY AND REASSEMBLY

Visual inspection

Check cylinder walls for scratches, roughness or ridges which indicate excessive wear.

If cylinder wall is too rough, deeply scratched, ridged, replace cylinder block, piston rings and/or pistons.

Inspect piston for cracks or other damages.

If abnormality is found, replace piston.

Piston Pins and Connecting Rods Inspection

Reference: PISTON, PISTON RING AND CONNECTING ROD DISASSEMBLY AND REASSEMBLY

Check piston pin, connecting rod small-end bore and piston pin hole in piston for wear or damage, paying particular attention to condition of small-end bore bush.

If piston pin, connecting rod small-end bore or piston pin hole in piston is badly worn or damaged, replace piston pin, connecting rod and/or piston.

Crankshaft Pin and Connecting Rod Bearings Inspection

Reference: PISTON, PISTON RING AND CONNECTING ROD DISASSEMBLY AND REASSEMBLY

Note. For identification of each cylinder, refer to PRECAUTIONS FOR IDENTIFICATION OF CYLINDER .

Connecting Rod Bearing Visual Inspection

Check bearing shells for signs of fusion, pitting, burn or flaking and observe contact pattern. If abnormality is found, replace connecting rod bearings.

Crankshaft Inspection

Reference: MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION

Main Bearings Inspection

Reference: MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION

Check bearings for pitting, scratches, wear or damage.

If any defective condition is found, replace both upper and lower halves. Never replace either half without replacing the other half.

Crank Case Bolt No. 1 Inspection

Measure each thread diameter at specified points on crank case bolt No. 1 (1) using micrometer (2).

Calculate difference in diameters ("A" - "B").

If it exceeds limit, replace with new one.

Crank case bolt diameter measurement points

"a": 61.0 mm (2.40 in.)

"b": 98.0 mm (3.86 in.)

Crank case cap bolt diameter difference

Limit ("A" - "B"): 0.013 mm (0.00051 in.)

Scheme 13

Sensor Plate Inspection

Reference: MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION

Check sensor plate (1) for crack or damage.

If defective condition is found, replace it.

Scheme 14

Oil Pump Drive Sprocket Inspection

Check oil pump drive sprocket (2) for crack or any damage.

If defective condition is found, replace crankshaft (1).

Scheme 15

Flywheel/Drive Plate Inspection

Reference: MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION

1. Check ring gear of flywheel for M/T model or drive plate for CVT model, for crack, wear or any damage. If defective condition is found, replace flywheel for M/T model or drive plate for CVT model.

Cylinder Block Inspection

Reference: MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION