Hi. Probably a daft question. My car is still having problems. I can only compare it to a petrol car running on 3 cylinders. No real power throughout the rev range, and when driven hard the spanner light comes on. Several forums mention problems with the no. 3 injector plug connections, but exactly where is this. Looking at the engine from the front, are they at the front or rear of the block? I can see 4 plug things at the rear of the block. Is that them (or glow plugs?). I want to have a fiddle with the no. 3 plug to see whether it makes a difference (although I've got a real feeling the problem will eventually be traced to a faulty Mass Airflow sensor). thanks