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98 GXE - High Hydrocarbon

I just took my beloved smog test. The car - a 98 GXE with 69K miles - passed. However, the technician noticed that the HC levels at 15mph were high. Max is listed as 55 PPM, my car rated at 53PPM. At 25 MPH, the car listed 17 PPM (max is 39 PPM).

What could be going on? Does this mean I'm running rich? Assume all normal maintenance has been done. My last oil change was about 2500 miles ago.

kai

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g2004 at g3prod.cotse.net

Reply to
filesiteguy
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Check and clean the throttle body and EGR circuit..

Reply to
Chang

Chang scratched out in the sand

got it!

I was leaning down that path as well.

Now,the last time I did this was with some SeaFoam on my GM 4.3 Vortec engine. What to I do here?

Reply to
filesiteguy

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