i have a 91 civic hatchback. i swapped out the stock engine, and threw in a B16. it took a few tries, but i eventually passed the state BAR inspector's test.
someplace along the way, i lost a distributor bolt, and the damn thing slopped all the way over to maximum advanced.
a while later, i took it for smog, failed (astonishingly high nox, like 3300), checked the timing, set it to where it's supposed to be, and tried again. my nox was lower, but still way high. something like 2400, with around 800 as a pass.
i don't know what to do to fix it. did i burn out the cat when the timing was so far off? do i need to find a throttle body with an egr on it? do i need to find a *COUGH!* smog *COUGH* shop?
thanks