Finally got my 85 city back on the road with the transplanted running gear from a 98 MPI. All untouched from when we removed it from the donor, other than a service.
I have made life a little more difficult in that I have retained the front subframe, side rad and I'm not running a servo. I'm also running the original centre clock and oil pressure and water temp gauges (I've got a smiths 80mm tacho which I disconnected as it wasn't reading right).
1st proper road test (after lots of idling to bleed out the cooling system) and I've got a bit of an issue. It defiantly feels a bit flat (I've had MPI's in the past) and under load there is a misfire, which if you apply full throttle from low RPM, it sounds like it is popping through the throttle body.
I've had the plugs out (they've done a couple hours idling and 30 mile drive) and they are like new with just a bit of white on the electrode.
Any thoughts? an air leak was the 1st suggestion (particularly where I blanked off the servo pipe), so I shall try squirting brake cleaner about the place to try and pick any up.