My 99 Rodeo (3.2L V6) had an intermittent gas smell in the engine and cab, and rough idle. I replaced the EGR, IAC, PCV and Fuel Filter. Runs smoother now, but gas smell has become constant. I do not see any gas leaks anywhere inside the engine or out. I have read different comments on it being leaks in the Injectors, the Fuel Vapor Canister, Vapor Solenoid or Fuel Pressure Regulator. Before I go spending any money on these I wanted to see if there were any ideas out there. Thanks.

 

check your Cat converters.When mine plugged up thats the first thing I smelled,then shortly after performance started falling drastically.Drop the manifold bolts to see if engine performance improves.
Good luck

 

Thanks for the suggestion, I'll definitely check that out.

 

The smell went away after replacing the fuel vapor canister and vapor solenoid. I can now park it back in the garage again!