I suspect a faulty fuel pressure regulator is causing your problem. The regulator may have a ruptured diaphragm allowing the raw fuel to leak into the intake manifold. It's common for fuel to get in to your crank case and mix with your oil when the fuel pressure regulator goes bad. The regulator is located in the intake with the fuel injection system and when it starts to go bad, this is one of the symptoms. Replace the fuel pressure regulator and make sure your oil does not get to saturated with gas causing it to thin out, which can promote the engine to spin a engine bearing. Good luck and hope this leads you to getting your jimmy running 100% again soon.