High oil pressure and severe leak

It could be a leaking fuel injector or a bad fuel pressure regulator. Do this plug the fuel return line then turn the switch on then off, if the pressure holds replace the fuel pressure regulator. If the pressure bleeds down remove the fuel rail with the injectors still attached and see which ones leak. I hope this helps. Take care.

Sounds like a intake leak or vacuum off

Have an assistant blow cigarette smoke in the end of the line and look for the leak under the dash,
Thinking that goes either to the brake light switch or the heater control

Yes, you can pressure test the cooling system with the engine not running to determine leaks. If you have a small inspection mirror to get in & under those tight spots it will help.

check your clutch hydraulic reservoir fluid level. If empty, you have a leak. Find the leak and get back to me for repair steps.

you probably have a bad o-ring on the fuel hookup to the intake/injection system. Does your engine look like the picture below? If yes, please follow instructions below the picture, and let me know if you have questions.

Remove the plastic cover (#19), hold a rag over the valve, and push in the stem to relieve the fuel system pressure. Since you are leaking, there may not be any pressure.

Remove and discard the fuel fitting clip.

Disconnect the fuel inlet and return tube and fitting assembly. Discard the old O-rings.

To install:

Position new O-ring seals (lightly coated with clean engine oil), then connect the fuel inlet and return tube and fitting assembly.

Install a new fuel fitting clip.

Pressurize the fuel system by cycling the ignition switch ON for 2 seconds, then OFF for 10 seconds and repeating, as necessary. Once the fuel system is pressurized, check for leaks.

Your loosing your fuel pressure in the system when you shut down the engine. You could have a leak in your fuel pressure regulator or your return fuel line check valve is worn, which is located on your fuel pump sending unit housing. The other thing also is you could have a weak fuel pump so check your fuel pressure at the shredder valve, you should have 62-65 PSI when the fuel system is pressurized (engine not running). Causes for weak fuel pump, bad ground wire from pump to frame or worn out pump and a dirty fuel filter.
Check your fuel pressure to ensure you have 62-65 PSI and check to see how fast your pressure will drop, a fast drop will indicate a leak in your system as to the fuel pressure regulator or check valve at the sending unit.
Thank you for using Fixya and good luck

could have a blown head gasket or cracked head or worse case scenario, a cracked block letting oil into the combustion chamber and out the exhaust. if it is letting coolant into the oil then pull the dipstick and there should be a milky white look to it where the oil tried to mix with the coolant. but its normal to have water alone drip from the drain hole in the exhaust from condesation. for every gallon of fuel your vehicle uses, it produces about a gallon of water thru the exhaust

in the low pressure charging port. its more complicated than that. why do you think it needs oil. oil is only added after a component is replaced, and the amount of oil is known. you dont want too much oil.

Maybe the dipstick tube fell out? Unless there's a hole in the block or something.