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I had a similar experience with MD emissions. I found 2 solutions. Firstly, I ran the fuel tank to nearly empty and then poured gas dryer in...a lot of it in....1/2 gallon or so. It is simply isopropyl alcohol of a high purity level. I ran the car back to the test station...which was about 9 miles away and tested it again with everything hot and running on almost pure alcohol. What do you know .....I got the fast pass this time....and a comment from the techincian "I have never seen a car with this many miles on it have such great numbers"....this was back at about 320,000 miles. The station reaked of alcohol after the test, and a savy tech would have noticed, but he didn't. As it turns out one reason that i had bad numbers to begine with was that my pcv system was almost totally blocked. I removed the oil accumulator and instead of beaing a hollw box weighing only a few onces, it was a solid block weighing about 1.5 lbs. I was able to soak it in solvent and use a wire and compressed air to clean it out...but it was a serious job...i would have replaced it if i weren't dead broke at the time. While there replace the flame trap. these things are almost universally neglected and cause serious problems.....like my blown crank seal that i have lived with for 15,000 miles. I would try the pcv system then if that fails....and the car runs well....aside from usual brick squeeks and grumbles...I would then go to the alcohol method....but that simply is to make it pass the test...don't run her on that stuff anymore than necessary though as it can cause other issues....I never had any though...hope this helps...good luck.
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