4 Wheel Drive/SUVs: 94 chevy s-10 blazer 4x4 vortec 4.3, rotten egg smell, vortec engines

Question
hello i really have a big problem one day my truck was starting up fine then it start taking a long time to start.then it started stalling out.also draging it like itry to accelerate and it starts out slow and gradually picks up oh when my truck stalls out when i do get it started it smells like rotten eggs. i had spark plugs and wires changed fuel cleanersand testsplease help me thanks
my truck has 112.000miles

Answer
Kenneth,

Those Vortec engines had notorious problems for the "spider" fuel lines inside the intake. It could be overfueling and causing the engine to flood as if it had a carburetor on it loading up. The rotten egg smell is coming from too much raw gas entering the catalytic converter. I would try to take it to the dealer and have the spider checked out on it since this involves removing the intake unless you feel that you can do it at home. I believe you can buy the fuel lines at the local auto parts store as well

Matt