Top end noisy due to hydraulic valve lifters and failing MOT emissions test. ( CO 5.45%, HC 351, Lambda 0.852).
The fault was cured by using Forté's Clean & Protect, a 45 minute Forté Advanced Formula Motor Flush adding Forté Oil System Protector to the new oil.
The engine was then run at 2,500 rpm adding half a bottle of Forté Specialist Injector Cleaner directly into the inlet manifold slowly drawn into the engine via a vacuum connection and adding the remaining Specialist Injector Cleaner and an additional bottle to the fuel tank.
The vehicle was taken on an extended road test. The emission re-test passed; CO 0.003%, HC 68, Lambda 1.004 and top end noise cured.
Thanks to Andy at The Service Centre in Tamworth, Staffordshire.
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