How can I fix squealing noise from Zafira? if oil stick is removed it stops, seems to be problem with air flow. Have only recently got timing belt changed with Opel dealer.

Montog., June 2010

this is likely the crankcase breather , the 1.6 has a diaphragm in the CAM cover / rocker cover , you can buy these and just replace the diaphragm - clean all pipes to throttle body and the tiny little hole on the lower right pipe connection in TB

John, December 2019

Thanks, does top of engine cover need to be removed for this? Today the Opel dealer where I bought the car new 4 years told me it needs new top cover, which costs 200euro fitted. got timing belt changed 1 month ago with them which cost me 250, am wondering could they have overtightened some tensioner...

montog., June 2010

check engine breather

wickham, June 2010