Join Date: Jan 2007
Location: Los Angeles, CA
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|5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)|
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A new catalytic converter is expensive, and can't afford that right now. Is there an adjustment on the engine one can make to reduce the NO level? Is there another solution to this just so I can pass that damn test, without having to spend a fortune? There's no vacuum leak in the engine.
I know of no adjustments like my '76 2002 with Weber carb. What is the status of your plugs? Valve cover gasket? O2 sensors? I read that the Cat is the last resort to replace. If so, have you considered a used part instead of new? I read increased engine compression is one of the leading faults responsible for high NOx. Not to mention, if oil is seeping into the combustion chamber during the smog check, air to fuel ratio would have been disrupted leading to increased emissions. The cost of CA living. Good luck.
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My other possible option, in combination with the above is to swap out MY Cat with the one on an '86 5-Series that's been sitting at my mechanics for the past 2 months. I'll ask them. Then swap it back after I pass my test.
That's all I got.
Thanks for the good tips. I hope we can figure this one out! I need my CA Registration!
Thanks for the response.
You're welcome. Appears that you and your mechanic have a good strategy. The Cat swap is righteous. You'll get that CA registration. Merry Christmas and a Happy New Year.
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