Engine: Testing and Inspection
ENGINE (2GR-FE)INSPECTION
1. INSPECT ENGINE COOLANT
2. INSPECT ENGINE OIL
3. INSPECT BATTERY
4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
a. Remove the air filter.
b. Visually check that the air filter is not excessively damaged or oily. If necessary, replace the air filter.
5. INSPECT SPARK PLUG
6. INSPECT V-RIBBED BELT
a. Visually check the drive belt for excessive wear, frayed cords, etc.
If any defect has been found, replace the drive belt.
HINT:
Cracks on the rib side of a drive belt are considered acceptable.
If the drive belt has chunks missing from the ribs, it should be replaced.
HINT:
- After installing the drive belt, check that it fits properly in the ribbed grooves. Check to confirm that the belt has not slipped out of the groove on the bottom of the crank pulley by hand.
- A "new belt" is a belt which has been used for less than 5 minutes with the engine running.
- A "used belt" is a belt which has been used for 5 minutes or more with the engine running.
- After installing a new belt, run the engine for approximately 5 minutes and then recheck the belt.
7. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY
8. INSPECT VALVE LASH ADJUSTER NOISE
a. Rev up the engine several times. Check that the engine does not emit unusual noises.
If unusual noises occur, warm up the engine and idle it for over 30 minutes. Then repeat step (a).
HINT: If any defects or problems are found during the inspection above, perform lash adjuster inspection
9. INSPECT IGNITION TIMING
a. Warm up the engine.
b. When using the hand-held tester:
Check the ignition timing.
1. Connect the hand-held tester to the DLC3.
2. Enter DATA LIST MODE with the hand-held tester.
Ignition timing: 8 to 12° BTDC at idle
HINT: Refer to the hand-held tester operator's manual for help on selecting the DATA LIST.
c. When not using the hand-held tester:
Check the ignition timing.
1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST 09843-1 8040
NOTICE:
- Confirm the terminal numbers before connecting them. Connection with a wrong terminal can damage the engine.
- Turn off all electrical systems before connecting the terminals.
- Perform this inspection after the cooling fan motor is turned off.
2. Remove the V-bank cover.
3. Pull out the red lead wire harness.
4. Connect the tester terminal of the timing light to the red lead wire as shown in the illustration.
NOTICE: Use a timing light which detects the first signal.
5. Check the ignition timing at idle.
Ignition timing: 8 to 12° BTDC at idle
NOTICE: When checking the ignition timing, the transmission should be in the neutral position.
HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, and then check that the engine rpm returns to idle speed.
6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
7. Check the ignition timing at idle.
Ignition timing: 5 to 15° BTDC at idle
8. Confirm that the ignition timing moves to the advanced angle side when the engine rpm is increased.
9. Remove the timing light.
10. INSPECT ENGINE IDLE SPEED
a. Warm up the engine.
b. When using the hand-held tester:
Check the idle speed.
1. Connect the hand-held tester to the DLC3.
2. Enter DATA LIST MODE with the hand-held tester.
Idle speed: 600 to 700 rpm
NOTICE:
- When checking the idle speed, the transmission should be in the neutral position.
- Check the idle speed with the cooling fan off.
- Switch off all accessories and air conditioning before connecting the hand-held tester.
HINT: Refer to the hand-held tester operator's manual for further details.
c. When not using the hand-held tester:
Check the idle speed.
1. Using SST, connect tachometer test probe to terminal 9 (TAC) of the DLC3.
SST 09843-18030
2. Check the idle speed.
Idle speed: 600 to 700 rpm
11. INSPECT COMPRESSION
a. Warm up and stop the engine.
b. Disconnect the injector connectors.
c. Remove the intake air surge tank.
d. Remove the 6 ignition coils.
e. Remove the 6 spark plugs.
f. Check the cylinder compression pressure.
1. Insert a compression gauge into the spark plug hole.
2. While cranking the engine, measure the compression pressure.
Compression pressure: 1.4 MPa (14 kgf/cm2, 199 psi)
Minimum pressure: 0.98 MPa (10 kgf/cm2, 142 psi)
Difference between each cylinder: 0.1 MPa (1.0 kgf/cm2, 15 psi)
NOTICE:
- Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
- Check the other cylinders' compression pressure in the same way.
- This measurement must be done as quickly as possible.
3. If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole and inspect again.
HINT:
- 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 in the gasket.
12. INSPECT CO/HC
a. Start the engine.
b. Rev the engine at 2,500 rpm for approximately 180 seconds.
c. Insert CO/HC meter testing probe at least 40 cm (1.3 ft.) into the tailpipe during idling.
d. Check CO/HC concentration at idle and/or 2,500 rpm.
HINT:
Check regulations and restrictions in your area when performing 2 mode CO/HC concentration testing (engine check at both idle speed and at 2,500 rpm).
If the CO/HC concentration does not comply with regulations, troubleshoot in the order given below.
1. Check A/F sensor and heated oxygen sensor operation.
2. See the table for possible causes, and then inspect and repair.