Runs fine on gas.
Petrol it's like it's starving for fuel under load. This problem has always been there, but seems to be getting worse. I have changed the fuel filter and have pulled out the vacuum hose off the fuel regulator and that was dry. I don't think it's injectors as I ran a screwdriver over them and can hear them clicking, I disconnected all of them but the last 2 one at a time and there was a noticeable difference which there should be. no black smoke at all. I know that these tests are only basic, but that's pretty much all I can do at home.
Starts and idles fine. Fuel pressure should be the same at idle and while under load, yes.
Fuel pump is in the tank? How would I go about checking it's working correctly and what else can I check..
Thanks all.