Re: 98 750 srad headache!!!
98 is not constantly powered like an inductive system you will not have 12v at the coil, its cdi, hits the coils with 90v each at firing, a peak hold tester will check firing voltage, ac settings on the multimeter may also read it at cranking
probably check the connectors at the ecu , make sure there is no corrosion, make sure your grounds are clean, are the cam and crank sensor both functioning right
and is the inlet cam pin at the correct installed height