mis fire

[1.2sx]

hi, i have a 1.2sx bravo that has developed an intermittent mis fire when the engine is under load ( will not do it free revin the engine) it sounds like its only running on two cylinders when it does it. i have chanaged coil pack and plugs and leads are ok. what next? injectors? ecu? also does anyone no if the key codes are programmed to the ecu? i no ford do this

 

[Sven]

Misfire can be due to bad petrol, also when was the oil changed and did you do an ECU reset ?

The keys are programmed in the ECU, you can have up to 8 keys per Bravo.

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[1.2sx]

it is not bad perol, it is defo electrical. i changed oil and and filter 1000 miles ago. how do u reset ecu? i have dis connected the battery and left it a bit i thought thats how u do it

 

[1.2sx]

also i was gona go scrap yard and look for an ecu but if the keys are programmed to ecu i guess thats out of the question