Martin ing Posted May 11, 2022 Share Posted May 11, 2022 I have a 2009 mk7 1.4 diesel fiesta, I had fumes in the cab and was told it was due to the o rings on the fuel return pipes, I got new ones and changed them, but ever since it's not ran right, like it was miss firering, I pulled the leads off each injector and it seemed to be number 2 as there was no change, I left it then went back the day after, the issue changed to number 4 as I did the same test ,checked all the wiering and all seems fine, only now it's acting like it's running on 2 , anyone got any ideas ? Could this be an air in fuel problem ?I've scanned it and there are no codes coming up which says to me it's not electrical. It's doing my nut in as all I did was change the return pipes , Quote Link to comment Share on other sites More sharing options...
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