As many of you the owners off the 1.6 diesel engines know, there is a rattle noise from the cam chain tensioner. If left like that the chain guides will eventually fail. Vauxhall realesed a fix for this, in form of a gasket that needs to be installed to the chain tensioner in order to keep the pressure on the chain. There is a special buletin about this issue and Vauxhall install this gasket for free but they ask for a dealer service history. If you do not have you need to pay for the job and cost is £600 labor and about £100 in parts. If you are a DIY person this install can be done by yourself. You will need the service manual of the engine, a good set of tools, like halfords advanced, a set of offset ring spanners, long nose pliers, and normal pliers, a tool for removing plastic clips, torque wrench 2-25 NM, couple of small flat screwdrivers, plastic trim removal tools to use them as leverage when open the cam chain cover, some brake disk cleaner to clean old gasket from the chain cover, Also the cam cover screws will need cleaning from the old seal. Parts that needs removing: cam cover, injectors, egr and egr cooler, throttle body, ecu and ecu support cam cover. When refitted injectors new seal washers needs to be used, and the seat of the injectors needs cleaning. I found easy to clean the seat by using a cotton bud taped to a long screwdriver. Also a new rocker cover gasket need to be used. Coolant will need to be dropped. This operation is not very hard but is time consuming and is a good idea to bag and tag the screws from each component while you take it off
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