Engine: Testing and Inspection
ENGINEON-VEHICLE INSPECTION
1. INSPECT ENGINE COOLANT
2. INSPECT ENGINE OIL
3. INSPECT BATTERY
4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
5. INSPECT IGNITION TIMING
NOTICE:
^ Turn all electrical systems OFF.
^ Perform the inspection when the cooling fan motor is turned OFF.
(a) Warm up the engine.
(b) When using the intelligent tester or Techstream:
(1) Connect the intelligent tester or Techstream to the DLC3.
(2) Enter the following menus:
(3) Inspect the ignition timing during idling.
Standard ignition timing: 8 to 12° BTDC @ idling (transmission in neutral position and A/C switch OFF)
(4) Check that the ignition timing advances immediately when the engine speed is increased.
(c) When not using intelligent tester or Techstream:
(1) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST 09843-18040
NOTICE: Be sure not to improperly connect the terminals. This may damage the engine.
(2) Remove the air cleaner cap.
(3) Pull out the wire harness as shown in the illustration.
(4) Connect the tester probe of a timing light to the wire of the ignition coil connector for the No. 1 cylinder.
NOTICE:
^ Use a timing light that detects primary signals.
^ After checking, be sure to wrap the wire harness with tape.
(5) Inspect the ignition timing during idling.
Standard ignition timing: 8 to 12° BTDC @ idling (transmission in neutral position and A/C switch OFF)
(6) Remove SST from the DLC3.
(7) Inspect the ignition timing during idling.
Standard ignition timing: 7 to 24° BTDC @ idling (transmission in neutral position and A/C switch OFF)
(8) Disconnect the timing light from the engine.
(9) Install the air cleaner cap.
6. INSPECT ENGINE IDLING SPEED
NOTICE:
^ Turn all the electrical systems OFF.
^ Perform the inspection when the cooling fan motor is turned OFF.
(a) Warm up the engine.
(b) When using the intelligent tester or Techstream:
(1) Connect the intelligent tester or Techstream to the DLC3.
(2) Enter the following menus:
(3) Inspect the engine idling speed.
Standard idling speed: 650 to 750 rpm (transmission in neutral position and A/C switch OFF)
(c) When not using the intelligent tester or Techstream:
(1) Using SST, connect terminal 9 (TAC) of the DLC3.
SST 09843-18030
(2) Race the engine at 2500 rpm for approximately 90 seconds.
(3) Inspect the engine idling speed.
Standard idling speed: 650 to 750 rpm (transmission in neutral position and A/C switch OFF)
7. INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Remove the 2 bolts, 2 screws and No. 1 engine under cover.
(c) Drain engine coolant.
(d) Remove the front wiper motor and link.
(e) Remove the front cowl top outer panel.
(f) Remove the 2 nuts and V-bank cover.
(g) Loosen the clamp and remove the No. 2 air cleaner hose.
(h) Disconnect the ventilation hose.
(i) Disconnect the MAF connector.
(j) Using a clip remover, detach the 2 wire harness clamps.
(k) Disconnect the vacuum hose.
(l) Loosen the hose clamp and remove the 2 bolts and air cleaner with element.
(m) Remove the intake air surge tank.
(n) Remove the 6 ignition coils.
(o) Remove the 6 spark plugs.
(p) Disconnect the 6 fuel injector connectors.
(q) Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug hole (Procedure "A").
SST 09992-00500
(2) While cranking the engine, measure the compression pressure (Procedure "B").
Compression pressure: 1300 kPa (13.3 kgf/cm2, 189 psi)
Minimum pressure: 1000 kPa (10.2 kgf/cm2, 145 psi)
Difference between each cylinder: 100 kPa (1.0 kgf/cm2, 15 psi)
HINT:
^ Use a fully-charged battery so that the engine speed can be increased to 250 rpm or more.
^ Measure the compression in as short a time as possible.
(3) Repeat procedures "A" and "B" for each cylinder.
(4) If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat procedures "A" and "B" for cylinders with low compression.
^ If adding oil increases the compression, the piston rings and/or cylinder bore may be worn or damaged.
^ If pressure stays low, a valve may be stuck or seated improperly, or there may be leakage from the gasket.
(r) Connect the 6 injector connectors.
(s) Install the 6 spark plugs.
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
(t) Install the 6 ignition coils.
Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf)
(u) Install the intake air surge tank.
(v) Install the air cleaner with element.
(w) Install the No. 2 air cleaner hose.
(x) Install the V-bank cover with the 2 nuts.
Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)
(y) Install the front cowl top outer panel.
(z) Install the wiper motor and link.
(aa) Add engine coolant.
(ab) Install the No. 1 engine under cover with the 2 bolts and 2 screws.
Torque:
for bolt 29 N*m (296 kgf*cm, 21 ft.*lbf)
for screw 5.4 N*m (55 kgf*cm, 48 in.*lbf)
8. INSPECT CO/HC
HINT: This check is to determine whether or not the idle CO/HC complies with regulations.
(a) Start the engine.
(b) Run the engine at 2500 rpm for approximately 180 seconds.
(c) Insert the CO/HC meter testing probe at least 1.3 ft (40 cm) into the tailpipe during idling.
(d) Immediately check the CO/HC concentration during idling and/or at 2500 rpm.
HINT: When carrying out the 2 modes (idling and 2500 rpm) test, the measurement orders are prescribed by the applicable local regulations.
(e) If the CO/HC concentration does not comply with regulations, perform troubleshooting in the order given below.
(1) Check the A/F sensor operation and heated oxygen sensor operation.
(2) See the table for possible causes, and then inspect and correct the corresponding causes if necessary.
