I have a 92 s-10 blazer w/ the 4.3 cpi motor. I smell fuel at start up. I do not see any visual leaks of any kind. Smell goes away after initial start. Could it possibly be the spider setup? Dont want to start changing parts for no reason. Thanks in advance. Anyway to check to see if spider is leaking?

 

A fuel pressure and leak down check will tell you if you have a fuel system problem.

It is possible that you have an EVAP system problem as well. A saturated charcoal canister that has been cracked can cause a fuel smell.