Hi all, back again with more problems with my ever reliable Fiesta.

I was driving to work this morning when all of a sudden the car started stuttering and idling funny, then the EML light flashed on and off over again. It then seemed to lose most of its power and struggled to reach 30mph, unless I really revved it. I managed to get it to work and back and scanned it when I got home. I got the following reading:

P0301 - Powertrain

Cylinder 1 Misfire Detected

I'm optimistically hoping it's just the spark plugs/coils that need replacing - does this sound like a possibility?

It's probably worth mentioning that we had horrendous rain overnight and this morning so I guess some water may have leaked in somewhere. It did run a lot better after it'd been sat in the car park drying out all day.

Thanks in advance for any help you might be able to offer.

I had a similar problem when i bought my mk6. the water jets DO leak water, not much.. but enough to cause trouble if the car is stood in the elements for a while. When i went to service mine the spark plugs were siezed in with rust & corrosion. 2 snapped, one came out eventually & the fourth was so badly corroded that the socket couldn't grip it! I eventually managed to extract the plugs (which had als been over tightened by the previous owner) and fitted new ones.. Car felt much better!

Now, as for solving the leaky jets, you can; 1.) remove the originals, Place black bathroom sealant where they sit and then place them back on the bonnet. or 2. (The route i went down). You can either purchase these;

http://www.ebay.co.u...=item2589acaeff

which are original jets with a rubber seal added. Or you can add these

http://www.ebay.co.u...=item1c3c181137

These are MIST jets with a rubber seal :)