yo i bought a 89 prelude and practicllay replaced alot of the stuff on it so far(distrubutor cap & rotor batterey, air filter and correctly hooked up all the vacum lines, new spark plugs, oil filter and new oil)its weird cuz some days it will sound & smell like it could easily pass emmisions but other days it shakes sounds like its missing, and choking on black smoke, what do u think the problem could be???