Need sugestions for reducing Nitrogen Oxide in 1987 300E
I followed previous advice and looked for vacume leaks but the 1987 300E has only a few small vacume lines and all were OK.
If the emission reading was a point high because of lean fuel mixture... then what else can I do to bring the Nitrotren Oxide down a wee bit? Would increasing the octane or running the car for about 15 miles just prior to the emission test help in any way?
Thanks.
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Earl
1993 190E 2.3
2000 Toyota 4x4 Tundra
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