why dose my 93 chevorlte camaro 3.4 liter when it starts thoughs black smoke when it runs
it might be the gasoline you are not putting the right one.
Black smoke is unburnt fuel, for whatever reason, you are running way rich. An DTC might help, you don't have OBDII .....try this page for OBDI troubleshooting, some really good information here: http://ls1tech.com/forums/lt1-lt4-modifications/1195302-obd1-dtc-codes-troubleshooting.html
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