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2002 kia sportage 2wd
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Discussion Starter · #1 ·
my 2002 kia sportage won't pass emissions inspection, I have a check engine light on, the autozone code reader is as follows,
code reader reports code PO171 - Mixture Too Lean, Bank 1.
code P0171,
Bank 1 system too lean.
Probable causes are large vacuum leak,
faulty fuel injector,
fuel system fault,
ignition system fault

I looked for obvious vacuum leaks and have cleaned the MAF, also, the original code also blamed the 1st o2 sensor, which I have replaced, any help greatly appreciated.
 

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Caribou, Otter, Buffalo
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2,688 Posts
Check the PCV and connecting hardware...
use a propane injector and check for leaks...
Clean the MAF
Check for any illegal air in system between MAF and intake manifold..

Do not throw part at the issue before making full diagnosis... Code reading is not enough.. Philip
 
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