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Remembered one more thing. I measured the vacuum at idle by teeing into the fuel damper vacuum input. Got 16 in Hg. But the needle was rattling a small amount between 15-16. I read in some post that a rattling needle indicates burnt valves. I hope that's not the case.
Also, maybe I should go to a smog shop and pay for a NO check with a gas analyzer. I have fixed a couple of small leaks after my last smog check and reconditioned the fuel injectors (although they seemed to be in decent shape to begin with). I just didn't feel like the fixes would be good enough the get a significant reduction in NO.
Another thing I've been looking into is to find a way to measure my air fuel mix ratio. But as far as I can gather, I would need to buy a wideband O2 sensor, a controller, and a gauge. Those kits seem to run around $200. I'm not really planning on doing any tuning, so I wouldn't have an ongoing use for the setup. I just want it as a diagnostic tool and to adjust my AFM bypass bolt. I guess I'm going to have to settle for looking at the voltage output of the narrowband O2 sensor to get close enough, unless there is another way.
Thanks,
oreke
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