Under the steering column

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Smelled a rotten egg smell for a few days popped thehe battery was steaming ... got a altenator test ...it was over charging my battery ....got a new altenator installed it and now the truck is just continuosly turning over not cranking/starting up...checked the coils and distributor akd there was no spark and so i replace the coil distributor spark plugs and wires, altenator, radiator, thermostat, starter, belts, hoses, pulleys, ac compressor, power steering pump, water pump, plus oil hange and oil filter and air filter and its got plenty of gas...everytig wprks like the altenator is charging the (brand new battery) but the truck just isnt starting. ..