I got done changing out my spark plugs and hooked everything back up. I went to start up the engine and as I turned the key gas started to shoot out of the fuel rail sensor. I checked to make sure the o ring was in there and it was. What would cause fuel to spray out of the fuel rail sensor like this? All I did was change my darn plugs.

 

What year and engine?

 

Sigh... A leak, of course.

 

damaged o-ring?