I know nothing about that vintage gasser FI. However the M116 engine
of the 80s had a system where you could pull up the whole "octopus"
of the fuel distributor and all 8 lines and watch what it did while
cranking the engine over. If that works on your engine, then that is
a simple way to isolate problems.
If you swap the injector from the dead cyl with another cyl does the
problem move with the injector or stay with the cyl?
Or, can you pull one inj from the dead cyl and hook it to the line
outside the engine? If so, then crank and watch the spray, same as a
diesel spray test.
If you have compression and ignition, and can determine if you have
fuel, then you are left with air. is there an obstruction in the
intake manifold?
Have you double checked firing order and engine cyl numbering system?
The under hood cats were either '75 & '76 or '76 & '77. You should not have
them. You do have that earlier fuel injection system that I know nothing
about at all.
OK Don
2001 ML320
2012 Passat TDI DSG
1997 Plymouth Grand Voyager
1957 C182A
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