Kia Troubleshooting Questions? Ask a Mechanic
Welcome, I'm Chris (aka Moose) I'm an independent contractor here at Just Answer.
Have you checked the fuel pressure, ignition spark, injector pulse?
Have you checked the compression to rule out a timing issue.
Crankcase oil that is overfilled and diluted with fuel means there is an injector faulty and stuck open allowing the fuel to flow into the cylinder, then it seeps by the rings into the crank case. If you remove all the plugs and unplug the injectors, crank the engine can you tell which cylinder is blowing fuel out?
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