My engine turns over like its jumped time and won't start .

What is your question?

I basically have 170psi across all 6 cylinders all timing chains are tight except the very bottom chain which has a little slack in it, never showed any signs of any problems and 4 days ago while driving too tn. the car just shut off I pulled over to the median looked under the hood seen nothing obvious and tried to restart it and it turned over but sounded like it jumped time and like it had no compression but it does 170psi each cylinder and all timing chains are tight except for the very bottom chain yet still won't start I have worked on cars for 35 years but never one of these suzuki's any tips and how can I check the timing to see if it's a couple of teeth out maybe or if it may just be the crank sensor I had a caddilac cts with the same symptoms sounding like it had no compression or like it jumped time and it just wasn't getting any fuel replaced fuel pump and even though it still sounded like it had no compression when it got fuel it started right up I no I have fuel but thinking it was the timing chain and needing to replace the water pump I didn't check for fire before tearing it down to replace the pump so I know I have fuel not sure on fire could that possibly be the crank sensor any addvice please.