Thanks a lot for the reply. So am I right in saying that the main petrol ecu sends the signals but the lpg ecu decides when the switch the signal to the lpg injectors? So the fault is going to be somewhere between injector 8 itself and the point where it switches?

Hi all, I'm new to the forum and in need of a bit of help!! I have a discovery 2 V8 (2000) converted to LPG (Landi multipoint). About 6-8 months ago I had an issue that when running on lpg it would switch back to petrol intermittently and blow the engine management fuse, so once switched...