Engine Oil Pressure Test - BRP Johnson J30TEL4SUA 2007 Service Manual

Engine Oil Pressure Test

Check the engine oil level.
Remove the oil pressure switch. Install an oil pres-
sure gauge and adapter into the oil pressure
switch hole.
Connect a tachometer to the engine in the follow-
ing manner:
•
Yellow lead wire to yellow/black lead wire of the
power pack
•
Gray lead wire to the positive (+) terminal of a
12 V battery
•
Black lead wire to the negative (–) terminal of a
12 V battery
•
Set the pole selection switch in the tachometer
to "12".
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5
1. Tachometer
2. Yellow lead wire
3. Black lead wire
4. Gray lead wire
5. 12 V battery
Start the engine and warm up engine as follows:
•
Summer: 5 minutes at 2000 RPM
•
Winter: 10 minutes at 2000 RPM
After warm-up, shift the engine into forward gear
and increase the engine speed to 3000 RPM. The
oil pressure at this speed and normal operating
temperature should be 58 to 72 psi (400 to 500
kPa).
If the oil pressure is lower or higher than specifica-
tion, the following causes may be considered:
Low oil pressure
•
Clogged oil filter
•
Leakage from oil passages
•
Defective oil pump
•
Defective oil pressure regulator
•
Damaged O-ring
001376
•
Combination of above items
High oil pressure
•
Using an engine oil of too high viscosity
•
Clogged oil passage
•
Clogged oil pressure regulator
•
Combination of above items
After testing, install the oil pressure switch.
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001331
POWERHEAD
TEST PROCEDURES
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