I've got a '95 1.8 Mondeo firing on two cylinders (confirmed by removing the HT leads and injector connectors of each cylinder in turn - removing those for cylinders 1 or 2 kills the engine. Removing those for 3 and 4 has no effect)
Placing the end of the HT leads for 3 and 4 near the block produces a good strong spark, and the plugs were changed probably about 4 months ago.
I'm thinking either plugs or injectors are the cause. I ran out of light today, but I'm going to go and swap the plugs in cylinders 2 and 3 tomorrow to see if that has an effect which should indicate plugs.
Is there any easy way to test the injectors as well?
Having never changed injectors, I'm not sure what's involved, but it looks like two bolts are holding it in. Is it as simple as removing the air chamber above, disconnecting the leads, undoing the bolts to release them, and a rag to catch any fuel under pressure?
Or is there any other cause which could be causing this? Any pointers would be gratefully accepted! Thanks, Paul