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  1. OSS

    1985 FJ60 failed California smog due to high NOx

    An aftermarket version of that check valve is available. I used one. It’s the same size/dimensions as the original and works well. See link below- https://shop.cruiserparts.net/index.php?main_page=product_info&products_id=471
  2. OSS

    1985 FJ60 failed California smog due to high NOx

    EGR valve starts opening when you push on the gas pedal. Valve closes at idle. Maybe they we’re lugging it at 15 mph. Betcha they did. 15mph is an awkward speed for the cruiser.
  3. OSS

    1985 FJ60 failed California smog due to high NOx

    15 mph on the rollers is easy. The engine is loafing & sipping gas. Its not idling. 25mph on the rollers they usually lug the transmission in too high of a gear and step on the gas to compensate- which creates a rich burn. Its a lot easier to pass a smog test on rollers running the stock tiny...
  4. OSS

    1985 FJ60 failed California smog due to high NOx

    Actually—- If the two vacuum hoses are connected together, mimicking an open BVSV, the choke will no longer work because the choke opener will get immediately pulled when the engine cranks. That’s no good. To bypass the choke opener so you still have a functioning choke, just plug the vacuum...
  5. OSS

    1985 FJ60 failed California smog due to high NOx

    The emissions manual shows how they’re hooked up. The spaghetti piping terminates with 4 pipes stacked on top of each other, then there’s 4 short vacuum hoses connected to them and stacked in a little bracket holder. Then use the diagram shown below to hook them up
  6. OSS

    1985 FJ60 failed California smog due to high NOx

    The Toyota emissions manual shows how the EGR system should be hooked up. It also gives tips on how to test it. High NOx is classic malfunctioning EGR. That’s the whole purpose of EGR— to lower combustion temperature to reduce NOx. BTW, retarding the timing will lower NOx too, but technically...
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