After returning from the shop for starting issues, my v70 is blowing the o ring out of the fuel rail where it connects and jetting gasoline against my block. I have replaced the o ring and started the motor and let run 20 minutes. All ok. Decided to test run a few hours later, started the car, let idle 2 or 3 minutes and blew the o ring out again. What gives? Any ideas out there?

 

have you checked to make sure the fittings are still good (ie no cracks, stripped threads etc)? Did you check to make sure the fuel pressure is within the expected range? Are you assembling the fitting correctly?

 

I had sent my vehicle to a shop because it would not start. They replaced a coolant sensor and did some testing. Fuel pressure was good. When I took the vehicle back and got it home I smelled gasoline and found the middle injector leaking fuel and returned the vehicle. The garage replaced all the o rings and I assume the o ring at the fuel connection at the fuel rail. I picked up the vehicle again and drove it home at slower speeds. The next day started it with little effort and thought all was ok. Drove the vehicle down the road for a mile or so and smelled gas again. Immediately drove it home and raised the hood. Saw gas leaking around center to left injector and pulled the cap off the fuel rail. Saw a jet of gas from the fuel connection to the fuel rail with the o ring pushed out at top. Replaced the o ring, re bent the metal piece and restarted the car. 20 minutes idle no problem. Revved engine, no problem. Thought issue taken care of. Went to test drive a couple hours later and started car. 2 minutes idle and had a puddle of gas on floor. New o ring pushed out again like it has too much pressure.

What it looks like
the screw was pulled afterwards in case your wondering

 

The line with the popped o ring looks to be the supply line. The bent hold down bracket may be compromised and not holding the fitting in place properly.
How does the fitting sit in the rail with the engine off? Is it sitting in place properly/flat/flush with the rail or is something causing it to sit cocked or wanting to go cocked? Perhaps not enough slack is in the line? Engine torque/movement pulling the line and fitting causing the bracket and fitting to move and the bracket to bend?
Are you able to put the hold down bracket on upside down and bolted down on the rail to place the bent area down wards to place proper hold pressure against the fitting?

 

You're going to have to straighten that hold-down piece.