My daughter's 94 Fiesta has a bad misfire .
Symptoms are: Lack of power Sounds as though it is not firing on all cylinders Blackened plugs
What I've done so far: Checked tappets (OHV engine) Changed plugs Changed air filter Changed fuel filter Checked fuel pump output Checked diaphragm in pressure control valve Checked resistance of HT leads Checked sparks Checked for split hoses. Checked compressions.
It is one of those that looks as though it has a carburettor but in fact has an injector in it.
Is there any way of checking the injection/management system without special gear?
Can anyone suggest anything else because I'm out of ideas?
Thanks
Dave