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Originally Posted by Blue 300e
I drove about 20 min at 40-50 mph to the emissions facility. Shut off the engine for about 15 minutes. Restarted the car and waited for about 10 minutes. Rev the engine fat 2000 rpm for about 5 min before it was my tunr to be tested. Would these conditions result in these high numbers? Should I have warmed up the cat more?
How do I adjust the timing? I have the Haynes manual and the cd manuals. Are the instructions there? Would changing the spark plugs, air filter, and adding fuel injection cleaner help?
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You should not have shut off the engilne!!!!!!!!!!!!!!!
The initial timing cannot be changed. You can slow the rate of timing advance with RPM by removing the R16/1 resistor (do a search on this forum and look at the CD) and replacing it with a "shorting plug" that you can fabricate from a short piece of 10-12 gauge wire and/or disabling the vacuum advance by replacing the short molded rubber tube on the inlet manifold end with a short piece of 1/8" vacuum tubing that you plug with a slug of silicone sealer.
None of the other things you mention will have much, if any, effect unless they are past their normal service intervals.
Duke