914-6 Won't Pass Emission Test, (never does...*&$#@^$% bullshit) Options

[Eric_Shea]

I sent Rich some numbers via e-mail but I thought we should post here in case we have some answers that may help others. I just failed both HC and CO. Stock 2.0 six.

ASM Emmission Test

HC 15mph:
Max - 509
Avg. - 109
Meas - 573

HC 25mph:
Max - 469
Avg. - 89
Meas - 401

CO 15mph:
Max - 5.07
Avg. - 0.76
Meas - 10.17

CO 25mph:
Max - 4.97
Avg. - 0.77
Meas - 9.57

I doubt these guys even attempted a hand at the enrichment screws. I used to take it there all the time when the owner would actually wrench on cars (old P-car mechanic... not that old). Now it's just a bunch of melon heads with computers.

The guy took about 10 minutes to bring my car out and then said "sorry it took me so long... I didn't know how to start it" (IMG:style_emoticons/default/blink.gif)

So... lean it out and...?? (IMG:style_emoticons/default/confused24.gif)

I'm no good at this shit... thanks in advance.

[MarkV]

High HC #'s are usually a ignition fault. With a CO of close to 10% you probably need to adjust the carb mixture screws.

I have had good luck raising the idle up to around 1100 RPM & running a set of platinum plugs for the test. Carbs have a dirty idle but your car is running dirty at cruise as well. CO should be around 3.25-3.5% & HC should be 100-150 PPM.