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190E (W201) 1982-1993: 190E 2.3, 190E 2.6, 190E 2.3-16, 190E 2.5-16, 190 D 2.2, 190 D 2.5, 190 D 2.5 TURBO, 190E 2.5-16 Evolution I, 190E 2.5-16 Evolution II

190e High Hc/co

 
Old 10-09-2005, 01:46 PM
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190E & LX-470
Exclamation 190e High Hc/co

Hey everyone, I have a question that I hope I can receive help on. On emission my 89 190e 6cyl blew high on HC/CO = Hydrocarbon & Carbon Monoxide. I had the valve seals replaced, and my O2 sensor light is working but not on to indicate a replacement is needed. I have given it a tune up also my HC = 3.0535 & CO =48.6325. Any ideas?
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Old 10-10-2005, 01:43 PM
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87 190E 2.6/1995 M3
how much oil you burning?
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Old 10-10-2005, 06:26 PM
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I don't drive it that much AT ALL but I knew I needed new valves seals I was burning and smelling oil. However, after the NEW valve seals more power and no oil smells.
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Old 10-10-2005, 07:43 PM
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87 190E 2.6/1995 M3
so how much oil you burning now? if there is no significant oil burning then you must be running rich, so how many mpg? also this is a 15yr old car, you did not mention mileage, but just because the o2 light is not on it doesn't mean replacement would not solve the problem...
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Old 11-04-2005, 10:14 PM
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I drive a 1991 190e 2.3 and I also own a 2001 ML320
o2 sensor is a usual cause of not passing smog replace it. catalic con. is another. I try the o2 sensor first.
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