Clio 182 misfires

[Uberwagon]

Hi all, new owner here and having some 2094 Clio 182 issues.

Correct NGK plugs fitted by previous owner in the last 6 months.
New NGK leads (Kam Racing)
New Coil (Kam Racing)
Proper Magnetti Marelli injectors (AUTODOC)
All connectors cleaned and a small amount of dielectric grease fitted on each.

It ran fine for about 50 miles and I now have a permanent misfire again. The idle has been lumpy when warm and bounces around 50rpm.

Is there anything else to look for as I’m chasing my tail at the minute.

The only thing I’ve noticed is that the HT leads don’t have snap as you put them on, I don’t think this would cause the misfire but am unsure if this is normal on the 182.

Before I pull it apart again and re-check, any other common issues ?

Dave!

 

[Márquez6]

I‘ve had issues with running rough when warn but had warning lights on the dash and code reader faults...lambda sensor and injector.
Looking through the old treads on here might help.

 

[ex-Chinese Dave]

Check the fuse box under the bonnet and pull the large white plug apart, wipe it and spray some WD on it.

 

[Uberwagon]

I’ve tried the white plug with dielectric grease and have the same problem still.

It could be just not wanting to take the inlet manifold off again, despite it being easy 😂

Dave!

 

[Uberwagon]

Problem found, cylinder 2 brand new NGK HT lead was faulty, so I’ll send those back when I’ve found a better alternative.

Dave!