How are Turbocharger Oil Line issues diagnosed?
Oil leaks are commonly diagnosed by locating the source of the leak visually. If the source is unclear, the area covered by oil can be degreased, and the oil can have a ultra-violet light reactive dye poured in to detect the leak with a blacklight (UV light). This is an easy way to ensure the leak is accurately identified, but normally not necessary. Blockage will be detected by either pressure testing the lines as the engine is cranked, not started, or by removing the return line to note lack of oil presence. Clogs are much less common, and would likely go unnoticed during diagnosis for quite some time.
How are Turbocharger Oil Lines replaced?
Oil lines for the turbocharger CHRA will be removed by disconnecting the banjo bolts securing the ends of the oil lines to the engine block and oil pan, removing the old metallic washers, and removing any fasteners which may prevent the oil line from moving during operation. Installation involves leaning all mating surfaces, replacing the metal washers, replacing banjo bolt, and torquing the fasteners to specification. After installation, the engine will be ran to ensure all leaks have stopped.
RepairPal Recommendations for Turbocharger Oil Line issues
Oil line upgrades are available, especially for aftermarket applications. Unless the system requires an upgrade, the factory oil supply and return lines should be used since they will likely last the remainder of the vehicle's service life. In fact, many aftermarket components in the price range of the factory oil lines will likely be of lower quality.
What to look out for when dealing with Turbocharger Oil Line issues
The banjo bolts and seals used on the oil lines for turbochargers are installed under high torque for the size of fastener used, as well as the material used. This makes torquing these fasteners worrisome for the inexperienced mechanic, and for good reason. Over Torquing is extremely easy to do, and a highly accurate torque wrench should be used.
Can I replace the Turbocharger Oil Line myself?
Aside from torquing the lines, this is not a difficult job, but it comes with much uncertainty and a high risk to reward ratio. If performed incorrectly, the oil lines can leak out the engine oil at a fast rate, provide low oil pressure to the turbocharger, and destroy the turbocharger. It is best that this repair be left to a professional, especially since it typically is not a costly repair.