No 2 + No 3 Cylinders not working on 2001 Clio 1.2 16v * FIXED * - Page 2 - Renault Forums :: Independent Renault forum

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post #6 of 9 (permalink) Old 29th August 2009
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Not knowing whether or not the plugs are actually firing or not, if they are, I would suggest it's a fuel injection problem
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post #7 of 9 (permalink) Old 29th August 2009
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Originally Posted by robd View Post
Hi I cant swap the coils around as its a complete coil pack.
However with that in mind I 've just replaced the complete coil pack this morning with a new one and the car is a lot better but still not perfect and the Engine management light is still flashing away.It now appears that all of the cylinders are doing something because the engine misfires when each of the 4 plug leads are disconnected in turn which it didn't do when 2 and 3 cylinder plug leads were disconnected with the old coil pack.But its still on 3 Cylinders under acceleration or load.The exhaust note is still uneven at idle as though a cylinder is not firing but as I said all 4 of the plugs are firing as the engine gets very rough when a lead is disconnected.

I apologise Rob i was under the impression your engine had individual ignition coils .
Whilst the new coil seems to have improved things has the colour of the ignition spark changed much as you were saying earlier it was an orange colour. If the spark remains poor on these cylinders it may be the ignition leads are breaking down.
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post #8 of 9 (permalink) Old 29th August 2009
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If the plugs have not been firing for some time
they may be covered in unburnt fuel and oil and
may take a little wile to clean up and run smoothly.

Who would design a vehicle that falls over when you stop?

If you find a fix for your problem please let us know it will help others.
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post #9 of 9 (permalink) Old 1st September 2009 Thread Starter
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Smile No 2 + No 3 Cylinders not working on 2001 Clio 1.2 16v ++NOW FIXED

Thanks Its now fixed.The initial cause was the coil pack which was producing a weak (orange coloured spark) on Cylinder two and and to a lesser degree on no three.Unfortunately however as I assumed that the orange spark on No 2 was ok I believed it was an injector fault and I removed the fuel rail and swapped no 2 injector with no1 injector which was working ok.By the way the Haynes manual says you have to remove the complete inlet manifold to remove the rail but you dont.You can slide it out to the left if you systematically disconnect the injector wiring plugs at the point when you can get your hand to them behind the manifold.This is where the problem occured in that I didn't fully clip no 2 injector wiring plug on to the injector after I'd done the swap!!!It was only when I removed the fuel rail for the second time to test the No2 injector wiring feed having fitted the new coil pack did I realise what had happened as the plug fell off the injector the moment the rail was moved.Any way I clipped it back properly this time and shes back on 4 cylinders running like a dream.I stuck 4 new plugs in as well whilst I was in there.Thanks to all of you for your help and support. You were all inspirational. All the best Rob.
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16v , clio , cylinders , fixed , working

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