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Hi,
My 159 has a rough idle and difficulty starting - I put FiatECUscan on the the car at start up and noticed injector 1 has a much larger correction factor than the others.

I am assuming that injector 1 in either blocked up or broken.

So when you are looking at the engine from the front does anyone know which Injector is number 1?

Many Thanks

Frank
 

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Black rubber clamps on all of the pipes from the fuel rail to the injectors, if these arent fitted the pipes cause the injectors to vibrate and the electrical connectors work there way loose causing a misfire. The connectors may not seem loose to the touch but the wires inside the connectors work loose
 
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