(Kia Optima) Diagnosing DTCs P0087 and P0193

[@weldingjunkie]

Nice job Eli, sucks people learn the hard way on engine components. It’s not always cheap but oem is best way, one person at a time learns. Hope all is well my friend

[@EliTheOBDTech]

Absolutely my friend.

[@DRDROP-fj4bo]

Good Job Eli. Does your scanner have a fuel pressure sensor actuation test for this car? My scanner has this test but it says failed when I run it on my 2011 KIA optima 2.4. I have no codes but engine shutters bad at idle only after it warms up. High side pressure is good. Have tried everything except check low side pressure. Do not have special adapter. Thanks

[@EliTheOBDTech]

Hey there, to be honest, I never checked the actuation tests for this vehicle.

[@EliTheOBDTech]

You may also have carbon deposits on your intake valves.

[@DRDROP-fj4bo]

@@EliTheOBDTech Thats what I been thinking also. Whats weird is it shudders worst when I apply brake,turn on ac,lights,roll down window. Cleaned throttle body twice and even checked alternator. Thanks for reply