Oil Leak Diagnosis - GMC chervolet camaro 1999 Service Manual

6-26 Engine Mechanical - 3.8 L
8. If a low reading is indicated, press the valve on
the tester base to isolate the oil pump and/or its
components from the lubricating system. An
adequate reading at this time indicates a good
pump and the previous low pressure was due to
worn bearings, etc. A low reading while pressing
the valve would indicate a faulty pump.
Oil Leak Diagnosis
Step Action
Value(s)
Engjne·.
Yes
No
DEFINITION: You can repair most fluid leaks by first visually locating the leak, repairing or replacing the component, or by
resealing the gasket surface. Once the leak is identified, determine the cause of the leak. Repair the cause of the leak as
well as the leak itself.
1. Operate the vehicle until it reaches normal operating
temperature.
2. Park the vehicle on a level surface, over a large
1
sheet of paper or other clean surface.
-
3. Wait (15 minutes).
4. Check for drippings.
Are drippings present? Go to Step2
System OK
2
Can you identify the type of fluid and the approximate
-
location of the leak? Go
to
Step 10 Goto Step3
1. Visually inspect the suspected area. Use a small
mirror to assist in looking at hard to see areas.
2. Check for leaks at the following locations:
3
• Sealing surfaces
-
• Fittings
• Cracked or damaged components
Can you identify the type of fluid and the approximate
Go to Step 10
Go to.Step 4
location of the leak?
•
1. Completely cl.ean the entire engine and surrounding
components.
2. Operate the vehicle for several kilometers (miles) at
normal operating temperature and at varying speeds.
3. Park the vehicle. on a level surface, over a large
4
sheet of paper or .other clean surface.
-
4. Wait (15 minutes).
5. Identify the type of fluid, and the approximate location
of the leak.
Can you identify the type of fluid and the approximate
location of the leak? Go to Step 10 Go to Step5
1. Visually inspect the suspected area. Use a small
mirror to assist in looking at hard to see areas.
2. Check for leaks at the following locations:
5
• Sealing surfaces
-
• Fittings
• Cracked or damaged components
'
Can you identify the type of fluid and the approximate
location of the leak?
Go to Step 10 Go to Step6
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