Ignition Timing Question

  • #1

    Ignition Timing Question

    I replaced the EGR with a used one from 300zx Parts For You; and also took care of a damaged camshaft seal that was doing a continuous oil change down the road. Car fired up instantly and showed no signs of wanting to stall out or and idle instability. After a quick test drive, she ran smooth as glass. I took it into the smog shop, and it passed the sniffer with flying colors. They failed it on functional claiming the Ignition Timing was @ 2 degrees BTDC. I find that hard to believe that the car is running that good, with the ignition timing off by about 12-13 degrees.
  • #2
    EGR lets you run much more advanced timing and use less fuel at light throttle, I don't understand the fascination with removing it
  • #3
    Wait, so it passed the sniffer tests and still fail you because they don't like where your timing is set? What kind of crap is that?
    Prius… because Pretentious wouldn't fit across the back of the car…

    Cheap, Fast, Reliable - pick any two

    My 1986 Turbo Build
  • #4
    Why would they care what the timing is at if the car is running right. The whole point of being able to adjust the timing is to be able to tune the car for emissions and driveability.
    1986 300ZX factory Turbo 2+2 5 speed swap. 1985 Toyota MR2. Floor boards gone. Good fabrication practice.
  • #5
    well for all you country ppl who dont have to do smog and dont know what it is. your car basically needs to be the way it was when it was new when it goes into smog. thats what the arb tested it as for emissions. this includes timing.



    you coulld have the wrong crank pulley....
  • #6
    Where the fuck do they check ignition timing at inspection? That's stupid. Relocate immediately.
  • #7
    Z31s have no balls with less than 17°BTDC - it wouldn't even run with 2. I'm not sure 2 can even be achieved unless the distributor is off a tooth.
    - VG30DET (HE341) 86 300ZX - 1982 280ZX Turbo - Headered NA 1986 300ZX 2+2 - 2000 Xterra -