Engine Tune-up

5-4prose procedure

Compression pressure standard differs between SOHC (D16A6/A7) and DOHC (D16A8/A9) 1.6 L engines.

Air Cleaner Element Inspection/Replacement

1
Remove the air cleaner element.
2
Check the air cleaner element for fouling.
No cleaning is necessary for the air cleaner element, because its filter takes in oil (: viscous type).

Replace: every two years. The air cleaner element should be replaced more frequently on cars normally used under severe driving conditions.

1
Remove the air cleaner cover.
2
Replace the element, install the air cleaner cover and tighten the clip, nut or bolts securely.

1
Before inspection, run the engine until it warms up (radiator fan comes on).
2
Disconnect spark plugs (4).
3
Disconnect the 2-P connector (ignition coil primary lead) from the distributor.
4
Fit the compression gauge adapter into a plug hole.
Use a full charged battery.
5
If compression pressure is low, it is caused by wear or damage of piston rings or head gasket, and improper seated valves.

Specification	Value
Compression pressure - SOHC Engine	1,275 kPa (13.0 kg/cm2, 185 psi) at 250 min-1 (rpm)
Compression pressure - DOHC Engine	1,324 kPa (13.5 kg/cm2, 192 psi) at 250 min-1 (rpm)
Compression pressure - Limit	932 kPa (9.5 kg/cm2, 135 psi) at 250 min-1 (rpm)
Difference between cylinders	169 kPa (2.0 kg/cm2, 28 psi)

Compression pressure - SOHC Engine

1,275 kPa (13.0 kg/cm2, 185 psi) at 250 min-1 (rpm)

Compression pressure - DOHC Engine

1,324 kPa (13.5 kg/cm2, 192 psi) at 250 min-1 (rpm)

Compression pressure - Limit

932 kPa (9.5 kg/cm2, 135 psi) at 250 min-1 (rpm)

Difference between cylinders

169 kPa (2.0 kg/cm2, 28 psi)