u/Anxious-Leek5732

Nothing shows up on my fuel pressure regulator and it smells very strong but not like burning oil. I’m thinking some sort of fueling issue but I’m not sure where to start. Fuel pump is priming but you can’t really hear it over the fridge in this video.

Recently upgraded to JWT s2 cams, 370cc injectors 225 lph pump, pallnet rail, and aeromotive fpr all running through microsquirt.

Cranks but doesn't start after changing fpr, cams and going standalone. It has inconsistent cranking speed and has a popping/bubbly misfire/backfire sound. The pulse width on the injectors jumps to around 14 milliseconds when it pops and all the lights seem to lag when it stutters. I've checked timing on my belt and made sure my distributor was lined up properly at tdc. Starter fluid and stepping on the gas make little to no difference. Any help is appreciated.