My trusty 89 Audi 100 failed the Texas annual emissions inspection, with
excessive HC at idle ( 373 vs. the 220 limit ). All other parameters were
under the limit, including HC at speed. The inspection station said to get
an additive from O'Reilly Auto Parts called "Guaranteed To Pass", and run it
through a tank full of premium gas with Techron. Then run the car for about
15 miles to get it good and warm before inspecting it again.
I have 15 days to get the car re-inspected without having to pay another $40
What do you think of their advice? Do you have any other suggestions?
FYI, the car has been maintained by the book by a very competent Audi
mechanic, and it is current on oil changes and tune-ups; all the basics are
correct. I also add Techron at every oil change. He says it may need a new
catalytic converter. The odometer stopped working several years ago, but I
estimate the mileage at around 300K miles. I only put about 4000 miles a
year on the car now, so it is driven mostly in town two or three times a
week for short trips.
Thanks for your opinions!
89 Audi 100
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