1989 900s not starting

[mwatson111]

i got this 900 from family- and it has sat for 10years---i drained the fuel & put in new. it started but ran bad--major miss and rich smoke.i drove it to the station for more fuel.--the cat was red hot so i turned it off. i emptied out the cat and put a new o2 sensor on, MAF, and fuel pressure regulator--and fuel pump relay. still no work--it wont even start now- just crank.--i have 208 psi in all cyl. ---anything im missing here!!!

please help

[Roto]

an engine needs three things to run: fuel, spark, and timing. I'd hope that timing is ok, so start looking at spark...and fuel pressure.