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.
Forté's Technical Helpline receives over 300 calls per month. This blog shares solutions for garage workshops on common driveability concerns that can be quickly and effectively treated. The vast majority of those identified are caused by fuel and oil borne contamination formed by natural degradation or via the combustion process. This is a fact of life for internal combustion engines where fossil fuels and oils are used.
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