Nissan Rogue Service Manual: Compression pressure
CHECKING COMPRESSION PRESSURE
- Warm up the engine to full operating temperature.
- Release the fuel pressure. Refer to EC-144, "Work Procedure".
- Remove the ignition coil and spark plug from each cylinder. Refer to EM-36, "Removal and Installation" and EM-17, "Removal and Installation".
- Connect engine tachometer (not required in use of CONSULT).
- Disconnect the fuel injector harness connector to avoid any residual fuel injection during the measurement.
- Install the compression tester with the adapter into the spark plug hole.
- Use compression tester whose end (a) (rubber portion) is smaller than 20 mm (0.79 in) in diameter. Otherwise, it may be caught by cylinder head during removal.
- With the accelerator pedal fully depressed, turn the ignition switch to the “START” position to crank over the engine. When the gauge pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cylinder.
CAUTION: Always use a fully charged battery to obtain specified engine cranking speed.
- If the engine speed is out of specified rpm range, check the battery. Check engine speed again with a fully charged battery.
- If compression pressure is below minimum value, check valve
clearances and parts associated with combustion
chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder
head, cylinder head gasket).
After the checking, measure compression pressure again.
- If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole of the cylinder to re-check it for compression.
- If the added engine oil improves the compression, the piston rings may be worn or damaged. Check the piston rings and replace if necessary.
- If the compression pressure remains at low level despite the
addition of engine oil, the valves may be malfunctioning.
Check the valves for damage. Replace the valve or valve seat accordingly.
- If two adjacent cylinders have respectively low compression pressure and their compression remains low even after the addition of engine oil, the head gasket is leaking. In such a case, replace the cylinder head gasket.
- Install spark plug, ignition coil and harness connectors. Refer to EM-17, "Removal and Installation".
Camshaft valve clearance
Camshaft valve clearance
Perform this inspection as follows after removal, installation, or
replacement of the camshaft or any valve
parts, or if there are any unusual engine conditions due t ...
Other materials:
DTC/circuit diagnosis
U0428 STEERING ANGLE SENSOR
DTC Logic
DTC DETECTION LOGIC
CONSULT Display
DTC Detection Condition
Possible Cause
ST ANG SEN CALIB
[U0428]
Predictive course line center position adjustment
of steering angle sensor is incomplete.
Adjust predictive cours ...
Oil
Description
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together with the
refrigerant. It is necessary to fill compressor
with oil when replacing A/C system parts or when a large amount of refrigerant
leak is detected. It is important
to always maintain oil level ...
System
System Description
When the vehicle has reached a speed of 40 km/h (25 MPH) or greater, the BCM
receives a signal transmitted
from the tire pressure sensors installed in each wheel. If the BCM detects low
inflation pressure or a system
malfunction, it sends a signal to the combination meter v ...