Leaking valvecover would u drive a 04 kia sedona 750 mi. with a leaking valvecover gasket before repairing ?

https://fusesdiagram.com/kia/fuses-and-relay-kia-sedona-1999-2006.html
04 Sedona fuse box diagram
https://www.autogenius.info/kia-sedona-2002-fuse-box-diagram/

https://www.autozone.com/repairguides/Kia-Sedona-2002-2006/Wiring-Diagrams/Wiring-Diagrams-3-of-4/_/P-0996b43f803760e2

Use the codes you have to diagnose

Could be a rich condition & computer
is driving fuel trim lean-thus the code

Could be a bad O2 Sensor stuck lean

Could be a vacuum leak & lean codition
as a result

Need a repair shop or lots of studying
if your going to resolve & you can

We do not have this procedure sorry.

you can use silicone, but make sure that you get an even load of it , on all the parts, or its going to leak again, I use both when replacing my gaskets

being an 04 there is a reason ur a/c isnt working. even if it is because its low on freon that means that it leaked out and the leak needs to be fixed b4 adding freon

EBAY, !!!

Yes big time ,fit a non return valve in the feed line from the filter to the pump ,you have a air leak somewhere and i would suspect the rubber o ring in the top of the filter housing,its running back when you leave it because of the air leak

blown head gasket. Your coolant is leaking into the combustion chambers and you are burning it. If you can still drive it you might want to try putting in K&W block sealer. Follow the directions carefully and this may prolong the inevetable. Need your heads inspected and new head gasket.

vacumn leak

your valve cover gasket may have blown. This can happen if you overfill above the required dipstick level. take off the valve cover and check the gasket. Better to be under the level than over. The oil preassure will try to blow from where ever there is a weak gasket.