Oil Leak Diagnosis (Chevrolet Captiva 1)

Important: Most fluid leaks can be fixed first by visual inspection and finding the leak location, repairing or replacing the relevant structural element, and improving the condition of the sealing gasket surface. Once a leak is detected, its cause must be determined. Eliminate the cause of the leak, as well as the leak itself.

Step	Operation	Values	Yes	No
1	Start the vehicle's engine and let it run until it reaches normal operating temperature. Place the vehicle on a flat surface over a large sheet of paper or other clean surface. Wait 15 minutes. Carefully inspect the underside of the vehicle for drips. Are there drops?	-	Jump to operations 2	The system is normal
2	Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 3
3	Inspect the questionable area. Use a small mirror to see hard-to-reach areas. Check your vehicle for leaks in the following areas: Sealing surfaces Fitting Cracked or damaged components Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 4
4	Thoroughly clean the entire engine and surrounding components. Drive the vehicle for several kilometers, miles at normal operating temperature and at various speeds. Place the vehicle on a flat surface over a large sheet of paper or other clean surface. Wait 15 minutes. Determine the type of fluid and the approximate location of the leak. Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 5
5	Inspect the questionable area. Use a small mirror to see hard-to-reach areas. Check your vehicle for leaks in the following areas: Sealing surfaces Fitting Cracked or damaged components Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 6
6	Thoroughly clean the entire engine and surrounding components. Apply an aerosol powder, such as baby powder, foot powder, etc., to the suspected leak area. Drive the vehicle for several kilometers, miles at normal operating temperature and at various speeds. The type of fluid and the approximate location of the leak can be determined by the discoloration in the powder surface. Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 7
7	Inspect the questionable area. Use a small mirror to see hard-to-reach areas. Check your vehicle for leaks in the following areas: Sealing surfaces Fitting Cracked or damaged components Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 8
8	To identify the type of liquid and locate the approximate location of the leak, use an invisible radiation device. When using the device, follow the manufacturer's instructions. Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	Jump to operations 9
9	Inspect the questionable area. Use a small mirror to see hard-to-reach areas. Check your vehicle for leaks in the following areas: Sealing surfaces Fitting Cracked or damaged components Is it possible to determine the type of fluid and the approximate location of the leak?	-	Jump to operations 10	The system is normal
10	Inspect the engine for mechanical damage. Particular attention should be paid to the following points: Higher than recommended fluid levels Higher than recommended fluid pressure Clogged or faulty fluid filters or shut-off valves. Clogged or damaged engine ventilation system Insufficiently tightened or damaged fasteners Cracked or porous components Inadequate seals or gaskets in required locations Incorrect installation of seal or gasket Damaged or worn gaskets or seals Damaged or worn sealing surfaces Carefully inspect the engine for any changes made by the customer. Is there any mechanical damage or modifications made to the engine by the customer?	-	Jump to operations 11	The system is normal
11	Repair or replace all damaged or altered components. Is the engine still leaking oil?	-	Jump to operations 11	The system is normal