i have a 97 s10 blazer 4.3, i just replaced the head gaskets and all others that came with the kit. new cap and rotor, new wires and plugs, new pcv. fired it up this morning, misfire code p0300, which after a minute changed to p0303.. cylider 3. and p0135 o2 sensor. white smoke bellowing from the exhaust also. i just got home from work and tried to start it. no misfire, but running rough, it's dark out so i looked for an arking spark, nothing. could smell tons of fuel. was looking for leaks and noticed (what i thought was water coming from the left exhaust manifold).. turns out after smelling it, it's liquid gasoline!!! glad i didnt blow up!! haha... now what?? could the spider be malfunctioning and cause this?? ...when i replaced the lower intake manifold, i noticed a crack. no i got another one from my work, and replaced it... (used the spider that was mounted on it, cause it was already there and looked a bit cleaner)... i'm gonna go swap out the spider and pcv with my old ones. i'll let you know how it goes!