how to fix Cadillac Escalade T1XX (2021-Present) exhaust smoke problem

Symptoms

• Blue or gray smoke from the exhaust
• Loss of power during acceleration
• Increased oil consumption
• Engine misfire or rough idle
• Check engine light illuminated

Diagnostic Steps

1. Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs).
2. Check the engine oil level and condition to determine if oil is being consumed.
3. Inspect the PCV (Positive Crankcase Ventilation) system for blockages or failures.
4. Examine the intake manifold for oil leaks or signs of oil entering the intake.
5. Conduct a compression test to assess the integrity of the engine's cylinders.
6. Inspect the turbocharger (if equipped) for oil leaks and proper function.

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical issues.
• Gather necessary tools and parts for the repair.

2. Inspect and Replace PCV System

• Tools Required: Screwdriver set, replacement PCV valve.
• Remove any engine covers obstructing access to the PCV valve.
• Disconnect the vacuum hoses from the PCV valve.
• Remove the PCV valve and inspect for blockages or damage.
• Install the new PCV valve and reconnect the vacuum hoses.
• Reinstall any engine covers removed during the process.

3. Compression Test

• Tools Required: Compression tester.
• Remove the spark plugs or fuel injectors to prevent flooding during testing.
• Insert the compression tester into the spark plug hole.
• Crank the engine for several seconds and record the compression readings.
• Compare the readings across all cylinders; if any are significantly lower, further inspection of piston rings or valves may be required.

4. Inspect Turbocharger (if applicable)

• Tools Required: Wrench set.
• Remove any components obstructing access to the turbocharger.
• Check for oil leaks around the turbo and for excessive play in the turbo shaft.
• If any issues are found, replace the turbocharger or seals as necessary.

5. Reassemble and Reconnect

• Reinstall any components that were removed for inspections and repairs.
• Reconnect the negative battery terminal.
• Start the engine to check for any abnormal noises or leaks.