I’ve got a Vauxhall nova 1.2i merit, had no engine when I got it so put in the 14nv in it. The car is up and running, it will idle all day fine. Take it out on the road and pulls great but after a few minutes it starts cutting out no throttle response etc.
ive tried cleaning out the tank and fuel lines, cleaned and blew out carb jets etc
i swapped the ignition coil and done the same thing
i put new set of ht leads on it and that brought the problem on quicker than before
could be mechanical/fuel or electrical I’ve got no idea at this point.