02 s80 T6 not starting after changing thermostat housing

[Foursightho]

First post

I've read several no start post on here over the past few days but none have helped me get the car started yet so I'm starting from scratch.

Problem:
Car cranks but does not turn over.
Started having misfire code on cylinder 4 changed the #4 coil. Drove about 300miles since, then had a misfire on cylinder 1. After which I decided to change all coils and plugs.

Drove the car about 20 miles after the tune-up then got the low coolant message. Found the nipple on the thermostat housing broken off leaking coolant everywhere. Changed thermostat housing out with new volvo oem housing that came with new temperature sensor.

Tried to start the car after the thermostat housing and temperature sensor change but no go. It cranks but does not start. Any opinions of things to look at?