hi all , how difficult is it to change the cylinder head core plugs on a 1.6 zetec 2005 , finding water when I tried to change spark plugs.

Most times the water between the spark plugs is just rainwater which is leaking between the bonnet and the windscreen washer jets. This is a known problem of the Focus MK2/MK2.5. This problem can be solved by installing new washer jets with improved seals or by resealing the current washer jets.

If there has been water between the spark plugs for a longer period the core plugs may be leaking as a result of corrosion.

Most times the water between the spark plugs is just rainwater which is leaking between the bonnet and the windscreen washer jets. This is a known problem of the Focus MK2/MK2.5. This problem can be solved by installing new washer jets with improved seals or by resealing the current washer jets.

If there has been water between the spark plugs for a longer period the core plugs may be leaking as a result of corrosion.

A well known problem of a lot of fords between 02-08 :(. Fiesta mk6/6.5 suffer aswell.

Can be solved with either silicone sealant under the factory washers or buy some mist replacements with a rubber seal :)

Also by fitting an engine cover :)

Also by fitting an engine cover :)

My car has the factory airbox/ engine cover fitted and it doesn't solve the problem. My plugs were rusted into the cylinder head.. They broke and had to be extracted ( what a fun days work that was)

In the end it was washers with a seal that solved it for me

many thanks to all ' discovered that washer housing causing the problem (known issue) core plugs not damaged as I previously thought, purchased upgrade washer jets' now all is well,' with regards to other post concerning water ingress into drivers side footwell , problem was matrix pipe joint leaking , best solution to fix after trying to change o ring and clamp (didn't work) was to bridge joint using a bit of hose, job done.

many thanks again 6good :P