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Hi , I have an permanent combustion misfire on cylinder 3, p1339 error code on my Peugeot 308 petrol n/a 88kw. Have changed the plugs , coils , checked connections on the coils and injectors , coils connections read 14v and 8.8 on the other wire. If I fiddle with the injector plug on cylinder 3 it throws a injection connector error so it's probably not the injector, de/ compression test seems fine too, have I bought a bumb spark plug maybe, can I try close the gap on it a little but? Also the cars exhaust smells rich on idle and engine is also uneven at idle but can rev cleanly to 6000rpm when in neutral ,car is a bit rough when just touching the accelerator a little bit st 2200 rpm, idles at 750rpm, any ideas or suggestions anyone?
 
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