you could try checking fuel psi after engine off if it drops off fast you probly have leaking injectors a injector flush would help or pull the injectors and check for carbon bild up also if you have a lot of fuel on your spark plugs this would cause a now start .did you get it started yet? the problem could just be you plugs if you smell fuel you are fluded and you plugs are probly bad now raplace the plugs and blow out the cylinders with compres air or just un plug all the injectors start the engine with the plugs out to blow out all that gas make shure your plug wires are away from the plug holes or you will have a four cylinder flame thrower then when you re start after instaling new plug go gas pedle to the floor.if it starts after cleaning out the cylinder and replaysing the plugs but then fails overnight again its the injectors.hope this will help