Misfiring Clio 1.2 16v 02 plate

[Ben4rich]

Hi,
I have a Clio 1.2 16v 02 plate and it's started misfiring I have changed swapped the spark plugs round to make sure it wasn't a faulty spark plug and fitted a new coil pack and the problem is still happening
If anybody could help it would be much appreciated

 

[Martin_172]

injector, or if its a <04 plate possibly engine wiring loom rubbed thru and shorted at the rear of the engine at the ecu

 

[Ben4rich]

injector, or if its a <04 plate possibly engine wiring loom rubbed thru and shorted at the rear of the engine at the ecu

could it not be the lamba sensors and the wiring loom that leads into the black box at the back of the engine

 

[Martin_172]

could it not be the lamba sensors and the wiring loom that leads into the black box at the back of the engine

pre cat lambda possibly but more often than bot its a dodgey injector i find

 

[da rok]

could be a number of things mate, if possible get a code reader and have a look at the live data and trouble codes... if you know which cylinder is misfiring then try swap the injectors around and see if the missfire follows, can also be a air leak into the manifold or a dodgey map sensor, lambda sensors rarely cause a constant missfire... they just mess up fuelling when they go... although rare... could also be a mechanical problem like a sticky valve...