Nissan Versa (N17): Compression pressure
Inspection
- Warm up engine and then turn it off.
- Release fuel pressure.
- Remove ignition coil and spark plug from each cylinder.
- Connect engine tachometer (not required in use of CONSULT).
- Install compression gauge (B) with an adapter (A) (commercial
service tool) onto spark plug hole.

- Use an adapter with a diameter (a) smaller than 20 mm (0.79
in). Otherwise, it may be caught by cylinder head during
removal.
(a) : Less than 20 mm (0.79 in)

- With accelerator pedal fully depressed, turn ignition switch to START
for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm.
Perform these steps to check each
cylinder.
CAUTION:
Always use a fully charged battery to obtain the specified engine
speed.
- If the engine speed is out of the specified range, check the battery.
Check the engine speed again with a
fully charged battery.
- If some cylinders have low compression pressure, pour a small amount
of engine oil into the spark plug
hole to recheck the 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 low despite the addition of
engine oil, the valves may be malfunctioning.
Check the valves for damage. Replace the valve or valve seat as
necessary.
- If two adjacent cylinders have respectively low compression pressure
and their compression remains
low even after the addition of engine oil the head gasket may be leaking, or
valves in adjacent cylinders
may be damaged. Inspect and repair as required.
- If the compression pressure is below the minimum value, check the
valve clearances and parts associated
with the combustion chamber (valve, valve seat, piston, piston ring,
cylinder bore, cylinder head,
cylinder head gasket). After repairing, measure the compression pressure
again.
- After inspection is completed, install removed parts.
- Start the engine, and ensure that the engine runs smoothly.
- Perform trouble diagnosis. If DTC appears, erase it.
Inspection and Adjustment
INSPECTION
Perform inspection as follows after removal, replacement or installation of
camshaft or valverelated parts, or if
there are unusual engine conditions regardin ...
NVH troubleshooting Chart
Locate the area where noise occurs.
Confirm the type of noise.
Specify the operating condition of engine.
Check specified noise source
If necessary, repair ...
Other materials:
Fuel efficient driving tips
Follow these easy-to-use Fuel Efficient Driving
Tips to help you achieve the most fuel economy
from your vehicle.
1. Use Smooth Accelerator and Brake
Pedal Application
Avoid rapid starts and stops.
Use smooth, gentle accelerator and
brake application whenever possible.
Maintain constan ...
When traveling or registering in another country
When planning to drive your NISSAN vehicle
in another country, you should first find
out if the fuel available is suitable for your vehicle's
engine.
Using fuel with an octane rating that is too low
may cause engine damage. All gasoline vehicles
must be operated with unleaded gasoline. There ...
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