VW Eos Crankcase Valve Causing Power Loss & Smoke

Had similar symptoms on my 2011 VW Golf GTI. The crankcase ventilation system failure started with white smoke from exhaust, followed by rough idle and significant power loss during acceleration. The maintenance revealed a completely clogged PCV valve, which caused excessive pressure in the crankcase. This pressure forced oil past the piston rings, creating the smoke issue. The leak also contaminated the intake manifold. This is a serious issue requiring immediate attention. Continued driving risks: Oil consumption increase, Catalytic converter damage, Further engine performance degradation, Potential internal engine damage The repair involved: Replacing the complete valve assembly, Cleaning the intake system, Checking connecting hoses, Testing system pressure These symptoms match your case closely. The ventilation system is crucial for proper engine operation, and failure can cascade into more expensive repairs if left unaddressed. Your current mileage is typical for this type of failure in VW engines. Recommend getting it fixed soon to prevent additional engine damage and maintain proper emissions control.

Thanks for sharing your GTI experience. Your symptoms match what I am seeing with my Eos perfectly. Really helpful to know about the potential risks of delayed repair. Did the fix solve all issues completely? Would be curious to know the total cost you paid and if any related problems showed up afterwards. Planning to book a repair appointment soon but trying to budget properly for this PCV valve replacement and associated work.

Good to report back that after getting the repair done, all issues were completely resolved. The smoke disappeared, engine power returned to normal, and the idle smoothed out immediately. The PCV system replacement cost 360€ including labor, which was reasonable considering the extensive work needed. The crankcase ventilation repair has held up perfectly for several months now. No related problems have emerged since fixing it. The service included a thorough emissions system check to ensure everything was working correctly. Just be sure they properly test the system after repair. A properly functioning PCV system is essential for maintaining correct engine pressure and preventing oil consumption issues. The investment was definitely worth it to prevent more serious engine problems down the line. Your Eos should perform like new once this is addressed. The quoted repair cost you received sounds in line with what these fixes typically run.

Thanks for the input. I took my Eos to the shop yesterday and got the PCV valve system replaced. The total came to 385€, which was slightly more than expected but reasonable given the work involved. The mechanic showed me the old valve, it was completely gunked up with oil residue. No wonder the engine was having issues. After the repair, the smoke is completely gone and the car feels much stronger during acceleration. The check engine light cleared up right away too. The maintenance also included a full system pressure test and inspection of connected components. Really glad I didnt wait longer, as the technician mentioned signs of oil starting to build up in places it shouldnt be. Will monitor things closely over the next few weeks, but so far the car runs perfectly again. The valve repair seems to have fully resolved both the emissions and power problems.