why does my Toyota RAV4 have excessive exhaust smoke

Solution

1. Preparation

• Tools Required: OBD-II scanner, oil filter wrench, socket set, coolant tester, compression tester.
• Safety Warnings: Disconnect the battery before working on electrical systems; allow the engine to cool before opening any coolant system components.

2. Address Oil Consumption

1. Change Oil and Filter:
   • Drain the engine oil and replace it with the correct viscosity oil as per the owner's manual.
   • Replace the oil filter using an oil filter wrench.
   • Refill with new oil and check the level.

3. Repair Coolant Leaks

1. Inspect and Repair:
   • If coolant contamination is present in the oil, inspect the head gasket, intake manifold gasket, and cylinder head for leaks.
   • Replace any faulty gaskets or seals identified during inspection.
   • If necessary, perform a head gasket replacement, which involves removing the intake manifold and cylinder head.

4. Replace PCV Valve

1. Remove and Replace:
   • Locate the PCV valve on the engine.
   • Disconnect the PCV hose and remove the valve from its mounting.
   • Install a new PCV valve and reconnect the hose.

5. Clean or Replace Fuel Injectors

1. Inspect and Clean:
   • Remove the fuel injectors using a socket set.
   • Clean the injectors using an ultrasonic cleaner or replace them if they are leaking or damaged.
   • Reinstall the fuel injectors carefully and ensure proper sealing.