I have codes p0171 & misfire on 1&4 and I found oil in my ash trey? Anyone help

[HoneyBadger78]

Codes p0171 and system lean misfire on 1&4 and how is oil in my ash trey?? Help!!
Also could my cat's be plugged??

 

[JamaicaJoe]

Oil in your ashtray might be coming from the AC system. Are you sure it is engine oil? If from the AC it may have UV dye in it and show up green in UV light. A misfire on 1 and 4 could be water on the passenger side cylinders from the heating core pipe. In which case, you might have antifreeze leaking inside the cabin. That will definitely show up green under UV light. And have a sweet smell.