Suzuki GSX-R 1000 Service Manual: Diagnostic information and procedures

Suzuki GSX-R 1000 Service Manual / Engine / Engine lubrication system / Diagnostic information and procedures

Engine lubrication symptom diagnosis

Suzuki GSX-R. Engine lubrication symptom diagnosis

Oil pressure check

Check the engine oil pressure periodically. This will give a good indication of the condition of the moving parts.

Note

before checking the oil pressure, check the following.

Oil level (refer to “engine oil and filter replacement” in section 0b .)
Oil leaks (if leak is found, repair it.)
Oil quality (if oil is discolored or deteriorated, replace it.)

Start the engine and check if the oil pressure indicator light is turned on. If the light stays on, check the oil pressure indicator light circuit. If the circuit is ok, check the oil pressure in the following manner.
Remove the left side cowling. Refer to “exterior parts removal and installation” in section 9d .
Remove the oil pressure switch lead wire (1) and oil pressure switch (2).

Suzuki GSX-R. Oil pressure check

Install the special tools to the mounting hole of the oil pressure switch.

Special tool (a): 09915–74521 (adapter hose) (b): 09915–17410 (oil pressure gauge adapter) (c): 09915–77331 (oil pressure gauge (1000 kpa))

Install the oil pressure switch (2) to the adapter.

Suzuki GSX-R. Oil pressure check

Warm up the engine as follows: summer: 10 min. At 2 000 r/min winter: 20 min. At 2 000 r/min
after warming up, increase the engine speed to 3 000 r/min (observe the tachometer), and read the oil pressure gauge.
If the oil pressure is lower or higher than the specification, the following causes may be considered.

Oil pressure specification 100 – 400 kpa (1.0 – 4.0 Kgf/cm2, 14 – 57 psi) at 3 000 r/min, oil temp. 60 °C (140 °f)

High oil pressure

Low oil pressure

Engine oil viscosity is too high
clogged oil passage
combination of the above items

Clogged oil filter
oil leakage from the oil passage
damaged o-ring
defective oil pump
combination of the above items

Stop the engine and remove the oil pressure gauge and attachment.
Reinstall the oil pressure switch. Refer to “oil pressure switch removal and installation” .
Check the engine oil level. Refer to “engine oil and filter replacement” in section 0b .
Install the left side cowling. Refer to “exterior parts removal and installation” in section 9d (page 9d- 6).

Schematic and routing diagram

Engine lubrication system chart diagram Engine lubrication circuit diagram ...

Repair instructions

Engine oil and filter replacement Refer to “engine oil and filter replacement” in section 0b . Engine oil level inspection Refer to “engine oil and filter replacement” in section 0b . ...

Other materials:

DTC “c46” (p1657-h/l or p1658): excv actuator circuit malfunction
Detected condition Possible cause C46 The operation signal does not reach the excv actuator. Excva position sensor voltage low or high 0.14 V ≤ Sensor voltage < 4.9 V (without the above range) excva can not operate properly. Excva ...

Cmp sensor removal and installation
Removal Remove the air cleaner box. Refer to “air cleaner box removal and installation” in section 1d . Remove the pair control solenoid valve. Refer to “pair control solenoid valve removal and installation” in section 1b . Disconnect the coupler (1) and remove the cmp se ...

Combination meter removal and installation
Removal Remove the combination meter mounting bolt (1). Bushing Disconnect the coupler (2) and remove the combination meter assembly (3). Installation Install the combination meter in the reverse order of removal. Note fix the boot of ...