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Slow Start Help!!

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  • Slow Start Help!!

    The Exhaust from my car smells a bit funny. I know it's not supposed to smell like roses, but it reeks compared to my other 2 Z's. However, there are a few things different. This one is a turbo (which i really don't see how it would effect exhaust smell), and here's the biggy, no Cat Converter. Would that cause my car to smell funny? A few mods have been done to it also: Engloid Plenum, K&N, and raised boost to 11.5 psi, which I've been meaning to lower. Honestly, it smells like unburnt gas, or maybe its oil (no smoke), because for a while it seemed like oil was dissipearing somehow.

    Assuming it is unburnt gas, where would I start? Plugs? Distributor? Is there a way to check before I actually start wasting money? There is no emissions testing in my area.

    Also, the car does not start immediatly. It has to crank a few times, which makes me think it might be the plugs. Most likely a related issue? Any ideas are appreciated!

    ~es3
    ~es3

  • #2
    umm, no cat = bad smell


    That is your smelly issue.

    The bad smells are what would usually be burned up in the cat.

    Terrible idea putting those wheels on...

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    • #3
      my cat makes bad smells all the time....






















      I gotta get him some better food :shock:
      88ss, MegaSquirted.
      t3/t4 60-1 cold, stage 3 hot, FMIC
      450cc DSM injectors, walbro 255
      http://www.z-toys.com/ Boost gauge and MS info

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      • #4
        hahahahaha, must be a high flow kitty there.

        Terrible idea putting those wheels on...

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        • #5
          well... What about the slow start? My other 2 300ZX's (n/a's) started after like 1 or 2 cranks. This other one starts after 4-5 cranks. What would cause that?
          ~es3

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          • #6
            I would guess the slow start and rich running is either a dirty AFM or a CHTS on its way out. Those two tend to cause those issues.

            If a car is running rich with no cat, the exhaust will tend to smell a little.

            CRC now makes an AFM "cleaner" spray, I've never tried it myself but I hear it works.

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            • #7
              5-8hp gains i hear :shock:

              Terrible idea putting those wheels on...

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              • #8
                Jason84NA2T wrote: I would guess the slow start and rich running is either a dirty AFM or a CHTS on its way out. Those two tend to cause those issues.

                If a car is running rich with no cat, the exhaust will tend to smell a little.

                CRC now makes an AFM "cleaner" spray, I've never tried it myself but I hear it works.
                Haha, I apologize, but I'm not entirely sure what the AFM is or where it is located. The CHTS... Center Head Temperature Sensor or something like that? I almost replaced that on my other Z. Isn't it only like 15 bucks from the dealer? And where could I get this AFM "cleaner" spray? I'd like to give it a shot.
                ~es3

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