Help adjusting timing
03-06-2008, 08:42 PM
#1
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89 300SE, 88 M5, 93 Miata
Help adjusting timing
My car failed inspection because of high CO% reading. CO% was 1.34 (should be less than 0.79 in NJ). I would like to play with the timing to see if I can lower the CO%. Can anyone post instruction on how to adjust the timing or PM me.
Thanks,
Thanks,
03-08-2008, 04:56 AM
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I owned a couple of M103 (300) engines for several years in Ca, and I never had a problem with smog. Timing is probably not the issue unless someone improperly adjusted it. Have you checked other maint. items on the car (spark plugs, air/fuel filters) etc? It also may be the cap/wires or injectors. If I remember correctly high CO means incomplete combustion, so I would check those other items first.
03-09-2008, 11:44 AM
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It changes all the time
I'm assuming your talking about the 89 300SE. You can't adjust the timing. All that car has is a rotor and cap stuck on the front of the bump stick. Timing is controlled by the EZL. I suggest adjusting the 3mm adjustment screw on the fuel distrubuter housing. Left is lean.
