Aftermarket March 2022

MARCH 2022 AFTERMARKET 37 www.aftermarketonline.net Fig.1 Fig.2 Fig.3 Fig.4 Fig.5 Fig.6 Fig.7 Fig.8 180° out, allowing compression to build 360° earlier. As you can see from Fig.7, which is timed correctly, the intake camshaft notch is facing outwards as described in the repair manual. You will also note the keyway on the end of the exhaust camshaft circled is facing 12 o’ clock. To finalise this and prove this is a factual job, you will find in Fig.8 both the exhaust camshafts (original and replacement) pictured together, showing the keyways and lobes. Once the new exhaust camshaft was installed, this then allowed for the intake camshaft to be installed correctly. Once the engine was reassembled, this vehicle started straight away. This just goes to show the power of modern vehicle testing using an oscilloscope and genuine technical data. Sometimes the possibilities that exist are not what first comes to mind. It is the ability to learn to trust the data that guides us straight to the fault, every time.