Further to George’s missive above, it’s not only Mazda who have gone for port injection combined with cylinder injection. Thankfully, the new 3 cylinder Ford Dragon engine fitted to the Morgan Super 3 has that feature, so manufacturers have soon realised their folly in producing GDI engines.
Pity for those who became the test bed for ill conceived technology!
That last sentence is a hard swallow for us Morgan owners!
The only way I could get my old 1970s plus 8 through the MOT back in the 90s was to disconnect the top (rocker) hose from the inlet manifold. Smoke would come from it ( I just used to pull it off the rocker leaving everything else in place) and my friendly MOT man used to say.. I'm measuring at the exhaust pipe not under the bonnet. More flexible days.....
