Meta Mechanics, Dubai’s trusted automotive service provider, recently completed a comprehensive engine overhauling for an Audi Q7 that had been experiencing multiple performance issues. The owner reported rough idling, excessive exhaust smoke, and power loss, which prompted a thorough inspection by our expert technicians. Upon diagnosis, we identified several critical issues that required extensive engine repairs. Our skilled team successfully overhauled the engine, addressing the problems and restoring the vehicle’s performance to its original standards.
Issues Identified and Solutions Provided:
- Excessive Carbon Build-Up in the Combustion Chambers
Problem: The engine showed significant carbon build-up in the combustion chambers and intake valves, which hindered efficient fuel combustion. This led to poor fuel economy, reduced power, and rough idling.
Solution: During the overhaul, we cleaned the combustion chambers and intake valves thoroughly to remove the carbon deposits. This restored optimal airflow, improved combustion efficiency, and enhanced overall engine performance, leading to smoother idling, better acceleration, and improved fuel efficiency. - Worn Pistons and Rings Causing Low Compression
Problem: The pistons and piston rings were worn, resulting in low compression in the engine. This caused poor power output, rough acceleration, and loss of engine performance.
Solution: We replaced the worn pistons and rings with high-quality OEM replacements, restoring compression to the engine. This significantly improved engine power, acceleration, and overall efficiency, making the vehicle perform like new again. - Damaged Cylinder Heads and Valve Seals
Problem: The cylinder heads were cracked, and the valve seals had worn out. This caused oil leaks, leading to smoke from the exhaust and inefficient engine operation.
Solution: We replaced the damaged cylinder heads and valve seals, ensuring proper sealing of the engine and preventing oil leaks. This fixed the issue of excessive exhaust smoke, restored engine performance, and prevented further oil consumption problems. - Faulty Timing Chain and Tensioners
Problem: The timing chain and tensioners were worn and stretched, affecting valve timing and causing engine misfires, knocking, and rough running.
Solution: As part of the engine overhaul, we replaced the timing chain and tensioners with high-quality parts. This restored the correct valve timing, eliminating misfires, reducing engine knocking, and ensuring smooth engine operation. - Clogged Oil Passages and Insufficient Lubrication
Problem: The engine’s oil passages were clogged, resulting in inadequate lubrication and increased friction between engine components. This caused overheating, excessive wear, and decreased engine efficiency.
Solution: During the overhaul, we thoroughly cleaned the oil passages to ensure proper oil flow. We also replaced the oil pump to ensure sufficient lubrication to all critical engine parts, which restored engine efficiency, reduced friction, and extended the engine’s lifespan.
Audi Q7 Engine Diagnostic and Inspection
Audi Q7 Engine Disassembly and Inspection
Audi Q7 Cylinder Head Removal and Cleaning
Audi Q7 Piston and Ring Replacement
Audi Q7 Crankshaft Inspection and Repair
Audi Q7 Valve Replacement or Resurfacing
Audi Q7 Timing Chain/Belt Replacement
Audi Q7 Bearing and Gasket Replacement
Audi Q7 Oil Pump and Water Pump Replacement
Audi Q7 Camshaft and Lifters Inspection
