Questions & Answers for: Kia Optima lean mixture

showing random misfires running lean wont rev up right 02 kia optima wont rev up past 4000rpm without showing engine code http://www.kiatechinfo.com/index.asp Good source for Kia its free to register ...

...as quickly as it should and it needs to be replaced. nox is oxides of nitrogen, a product of too lean combustion which causes cylinder temps to go too high. it sounds like replacing O2 sensor will ...

Whenever we put gas in our 2004 kia optima it does not want to start. what could be the problem? replace you fuel system evaporative filter (charcoal canister), the gas fumes evaporated from the fuel ...

...Rough idle can be caused by any number of things from uneven compression pressures on cylenders to lean mixture. You neead to get a download and readout of the onboard diagnostics to sort

My Kia Optima has system running lean code. I've replaced the upstream and downstream oxygen sensors and had a exhaust gasket replaced. Also, the fuel regualtor has been replaced. What is the problem?

...out the mixture and a worn plug. You replaced the plug and now that new spark plug is able to fire the lean mixture. But the false air remains to be corrected. Eventually, you'll have misfiring

2004 kia optima lx 6 cyl with check engine light on. Code came back as lean fuel. Stalls when I put gas in. What could this be? The car sat for several months without being driven, started a few times

How to fix lean in Zone 1? 4 cylinder with 170,000 miles. have already changed the converter, both coils, wires, plugs,EGR valve and cleaned mass air flow senser. Check for a vacuum leak. A lean ...

2004 Kia Optima PO171 Check engine light came on P0171 = System too lean, bank 1 - probable cause is - Intake/exhaust leak, Air system, MAF/VAF sensor, fuel pressure pump, injector(s), HO2S. Hope that

I had an diagnostic test done on my 2007 kia optima and it read p0170 fuel trim (bank1) what does this mean code p0170 refers to two problems fuel trim bank 1 --malfunction heated oxygen sensor(HO2S) ...