Year of Manufacture *: 2002
( Optional ) Engine Code or CC: Z16XE
z16xe petrol engine. fault logged misfire cyl 4 and multiple misfire, this is the 2nd identical fault astra we have had. car runs fine then develops a very "minor" misfire emission are perfect until slight misfire develops then ecu shuts off number 4 injector and lamda goes upto 1.50. it has had the coil pack and plugs replaced,now i havent spent too long on this one as we spent ages and a lot of money on the last one (which dealers havent cured yet) we blanked egr off,all compression tests were ok injector was replaced,cant smoke test inlet manifold really well as there is no pressure in smoke tester but brake cleaner spray around it shows nothing. i know another garage with just the same fault so thats 3 of these. i dont expect a fix but has anyone had this with these engines?? i am leaning towards a hydraulic folloewr fault,but done engine flush ets and put forte gas treatment neat into engine throttle body while running. grrrrr
sean
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