How to Solve the Turbo Oil Leak Issue in Haval H6?
3 Answers
Haval H6 turbo oil leakage may be caused by failures in components such as the crankcase ventilation device, air filter, or supercharger. In case of turbo oil leakage, it is necessary to conduct a step-by-step inspection to identify the cause of the leakage and then proceed with repairs. Replacement of the turbocharger may be required if necessary. Below is an introduction to the turbocharger: The turbocharger is essentially an air compressor that increases the intake air volume by compressing air. It utilizes the inertial impulse of exhaust gases from the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller then pressurizes the air delivered through the air filter pipeline, forcing it into the cylinders.
I recently helped a friend deal with the same turbo oil leak issue on their car. This is quite common in Haval H6 models, especially those over five or six years old. The most frequent problem is the aging seal ring at the intake pipe joint—you can open the hood and see obvious oil stains near the turbo. If the leak isn't severe, spending around a hundred yuan to replace the seal ring should fix it. However, if there are cracks in the turbo housing or severe wear on the blade bearings, the entire turbo assembly will need replacement. Don't delay, as a turbo oil leak can cause blue smoke from the exhaust and, in severe cases, lead to oil burning. Also, remember to check if the turbo boost pressure is normal—last time, my friend's car had weak acceleration due to the oil leak. It's best to have a mechanic inspect it thoroughly at a repair shop.
My Haval H6 also had a turbo oil leak last year, and I was really panicked at the time. There are mainly two most common scenarios: first, the clamp on the connecting pipe is loose, and you just need to remove and tighten it; second, the oil seal of the turbocharger is aging and failing, which requires replacement with a new part. I suggest first checking for oil traces at the pipe connections, then starting the car and revving the engine a couple of times to observe the leak point. Be careful when handling it as the turbo can be very hot; wait until the engine is completely cooled. Turbocharger repair is quite technically demanding, so I don't recommend doing it yourself. Nowadays, many repair shops offer transparent pricing, and replacing an oil seal only costs around three to four hundred yuan. Don't let the oil leak develop into an engine oil burning issue, as a major engine overhaul would cost much more.
