Troubleshooting
No Boost
Posted by Service Kinugawa on
Air Leak: Waring: The troubleshooting guide may only be conducted with the vehicle in drivable condition. Please stop the trials at signs of engine malfunction such as black smoke, excessive oil consumption, or run-away engine. Firstly, please check the following 4 points before inspection of the turbocharger. 1. Compressor housing outlet, intercooler circuit, and connections. 2. Turbine Housing inlet, manifold circuit, gasket, and connections. 3. Turbine Housing outlet, dump pipe circuit, gaskets and connections. 4. Compressor housing inlet, air filter clean situation and connections. Second, check the preload process of the adjustable actuator as the following link. https://store.kinugawaturbosystems.com/blogs/q-a/spring_pressure Restricted exhaust: The cause of low...
Smoke
Posted by Service Kinugawa on
Possible Cause   Possible Remedy Fuel injection pump or fuel injectors incorrectly set   Refer to engine manufacturer's manual and replace or adjust faulty components Wastegate mechanism set incorrectly  Contact engine experts for correct setting details Dirty air cleaner  Clean or replace element according to manufacturer's recommendations Restricted compressor intake duct  Remove restriction or replace damaged parts as required Air leak in feed from compressor to intake manifold  Replace seals, gaskets or tighten fastners as required Air leak beween intake manifold and engine  Refer to engine manufacturer's manual and replace gaskets or tighten fastners...
Turbocharger Noisy
Posted by Service Kinugawa on
Possible Cause   Possible Remedy Excessive dirt build up on compressor wheel and/or diffuser vanes  Clean in accordance with details/instructions from Kinugawa Turbo Systems Turbocharger damaged  Find and correct cause of failure, repair or replace turbocharger as necessary Failed diaphragm  Replace using correct actuator service kit Leaking hose  Replace hose and clips Wastegate mechanism set incorrectly  Contact engine experts for correct setting details Restricted compressor intake duct  Remove restriction or replace damaged parts as required Restricted air duct from compressor to intake manifold  Remove restriction or replace damaged parts as required Restricted intake...
Poor Transient Response Smoke
Posted by Service Kinugawa on
Possible Cause   Possible Remedy Fuel injection pump or fuel injectors incorrectly set   Refer to engine manufacturer's manual and replace or adjust faulty components Seized valve  Free valve or replace complete turbine housing sub-assembly Wastegate mechanism set incorrectly  Contact engine experts for correct setting details Dirty air cleaner  Clean or replace element according to manufacturer's recommendations Restricted compressor intake duct  Remove restriction or replace damaged parts as required Restricted air duct from compressor to intake manifold  Remove restriction or replace damaged parts as required Restricted intake manifold  Refer to engine manufacturer's manual...
Oil Leak from Turbine Seal
Posted by Service Kinugawa on
The Oil leaks can be caused by many factors, the main factor being incorrect pressure within the compressor and turbine housings. Oil leaks can cause vital damage to the bearing systems and occur within seconds of turbocharging. Firstly, please check the following 4 points before inspection of the turbocharger. 1. Compressor housing outlet, intercooler circuit, and connections. 2. Turbine Housing inlet, manifold circuit, gasket, and connections. 3. Turbine Housing outlet, dump pipe circuit, gaskets and connections. 4. Compressor housing inlet, air filter clean situation and connections. Waring: The troubleshooting guide may only be conducted with the vehicle in drivable condition. Please stop...