Hi everyone, I'm praying someone can help as this couldn't have happend at a worse time for me. I've just been made redundant and need my car to get to and from interviews and don't have acres of cash to pay Ford £90 per hour.

The story starts when I needed to change the passenger side headlight bulb and I couldn't get to it so I removed the battery. I put the battery cover on top of the engine near the spark plugs but forgot to put it back on after fitting the bulb. I closed the bonnet down and drove to the petrol station. Half way there the car started running lumpy and then engine managment light came on. I got home and saw what I had done .

Now . . . I can't see any damage where the battery cover has broke a pipe or wire etc. Also this could be purely coincidental!

I took it to ford who diagnosed an ODB error code P0352 and wanted £90 an hour to diagnose the issue further. So far after reading different posts on the internet I have replaced the coil pack, Spark plugs (NGK) and spark plug leads.

The gap on the plugs is 0.90mm (not sure if this is correct).

so far I have removed the Spark plugs after leaving the engine running and noticed that (standing at the front of the car facing the engine bay) spark plug 1 has black carbon deposits covering the surface, plug 2 and 3 are clean and look brand new, plug 4 is the same as plug 1. Plug 2 and 3 look as if they've just come out the box and would explain why it's only running on 2 cylinders.

I've checked the wiring from the coil pack back to the multiplug to the side of the shock obsorber and it looks good with no corrosion etc. I've also cleaned up all of the pins on the multi plug. I have a feeling this is a wiring issue from the research I've done but I don't know where to start.

The fuel feed to and from the injector rail also looks good and I can't see any damages.

Any ideas ??