Hi, hoping someone may be able to help me.

This car came in with a misfire and tapping from top of engine.

I scanned and found no codes on EOBD.

Carried out a leakoff test and found cyl 2 injector to be leaking badly, so replaced and tried again.

Car runs slightly better and tapping noise has gone, although a misfire still remains.

I carried out a leakoff test again and cyl 2 injector gave a reading of 4.5ml, which i consider to be bang on for a new injector, but the other 3 cylinders produced 10ml in the same time.

Would anyone else change the remaining 3?

Liam.