Failed emmisions test and real bad fuel economy.
Check your fuel vapor canister. this is a charcoal canister that collects your fuel vapors and redirects then through your engine to burn. when the canister fails you will get a strong fuel odor from the vehicle. It is located in the front area of your vehicle.
you could have to buy a new one
A bad seal on a gas can cap could potentially cause vapor lock in the gas can itself, leading to issues with fuel flow. However, vapor lock in the vehicle's fuel system is typically caused by heat-induced evaporation of fuel before it reaches the engine, not by a bad seal on a gas can cap.
A faulty evaporative canister can lead to increased emissions and reduced fuel efficiency in your vehicle. It may cause the engine control unit to trigger the check engine light, indicating a problem with the evaporative emissions system. This malfunction can also lead to difficulty starting the engine or rough idling, ultimately affecting overall performance. Additionally, a bad canister can result in fuel vapors escaping, which can be harmful to the environment.
(MY) 92 Chevy DOESN'T smell like gas, but your's may because the fuel vapor recovery system is not be working. Possible causes may be: 1) a clogged canister, 2) bad vacuum hose, 3) cracked fuel hose, 4) leaking injectors, 5) fuel pump, 6) missing gas cap or 7) a hole in the gas tank.
Bypass the relay and if the pump works the relay is bad.
how do i know the fuel pump is going bad in a 1998 ford expedition eddie bauer?
In old Chevy's it was vapor lock, which is the fuel boiling in the fuel lines. You can try to insulate your fuel lines and check fuel pressure..Could also be bad plugs.
You didn't say what motor size. If it's the 3.9... check the air switching relay and the canister purge solenoid. (TBI systems). There are three solenoids located together just to the left and slightly behind the carb. The Air switching solenoid is in the center and the canister purge solenoid is to the rear. Also check the charcoal fuel canister for a broken fitting (replace it), and DOUBLE CHECK the fuel tank fittings and fuel lines for a broken fitting or sucking air (most likely the cause. I just solved my problem with the same issue. Had a broke fitting on top of the tank, on the vapor canister and a bad solenoid. Took forever to start the truck, ran rough, smelled raw gas and after about 3 weeks accidentally noticed fuel running out of my tank when I left it idle to recharge the battery.
A charcoal canister can go bad due to several factors, including exposure to excessive heat, moisture, or contaminants that degrade the activated charcoal inside. Over time, the charcoal can become saturated with fuel vapors or damaged by chemicals, reducing its ability to capture and store vapors. Additionally, physical damage or cracks in the canister can lead to leaks, further impairing its function. Regular maintenance and timely replacement can help prevent issues with the charcoal canister.
Fuel pressure test.