Engine, Intake, Exhaust Modifications to your Normally Aspirated Hyundai engine. Cold Air Intakes, Spark Plugs/wires, Cat back Exhaust...etc.

Checking Injectors

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Old Oct 6, 2007 | 04:04 PM
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My tib is running too rich, and i wanted to maybe check the injectors to see if one is stuck open. Is there more of a hassle than its worth? Im not really sure where to begin. Also would the o2 sensors have something to do with why it is running rich? Black smoke comes out when i get on it, and sometimes it even seems like i wants to bog down.
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Old Oct 6, 2007 | 04:45 PM
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sounds like your maf sensor is on backwards. that's usually what happens. check the arrow to make sure directon of flow points towards intake manifold.
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Old Oct 7, 2007 | 01:00 PM
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ya i checked it, its right

any other suggestions? mad.gif
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Old Oct 7, 2007 | 01:13 PM
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I'd bank on the o2 sensor. No CEL's? are you sure its running rich (do you have a wideband?)

If it is,

You should probably try some injector cleaner, possibly seafoam, and reset your ECU.

If it still runs rich maybe a new o2 sensor.

You may just have some carbon build up so seafoam would take care of that.
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Old Oct 7, 2007 | 01:50 PM
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actually i do have a CEL, p0442 "small leak/ no flow" for the evap
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Old Oct 7, 2007 | 03:44 PM
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P0442 is generally a gas cap code. It could also be a purge or vent solenoid being defective, high or low fuel pressure.
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Old Oct 8, 2007 | 01:47 PM
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they made me replace my gas cap to pass e check, would the solenoid cause me to run rich?

now it almost stalls when i start it... please help!
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Old Oct 8, 2007 | 01:52 PM
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P0442 Evaporative emission (EVAP) system – small leak detected Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve

this is off rixsharks cel codes thing. looks like somethin on the intake piping/vacuum side of things maybe?
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Old Oct 8, 2007 | 02:16 PM
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i dono, but its running like shit
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Old Oct 8, 2007 | 02:18 PM
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^^ basically he just told you to check for vacuum leaks.
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