I have a 1994 ford taurus, 3.0 6cylinder, EFI. About 6 mos. ago I started smelling raw gas fumes. It is coming from the top of the fuel tank, not from the fuel pump gasket, but the smaller hole that connects the fuel vapor line that runs from the charcoal canister. Now the problem that started about 2 mos. ago is that sometimes when the engine is hot (normal operating temp.) it won't start after being shut off. I let it cool some and it will start, but it will knock, and backfire some. It acts like the fuel is too lean or too rich, then it will line itself out. It used to only take about 15 min or so to cool and start, but now it is getting progressivly longer. I have changed all of the obvious, plugs, wires, pcv valve, air filter, fuel filter, cap, rotor, etc. I don't know if this might be related to the raw gas smell or not. Please help if you can, I'm at my wits end with this. Thank you, Roger Banks.
Sorry, I gave you the wrong name of the part you're looking for. You're car doesn't have a crank sensor. What you need to pick up is a camshaft position sensor. It's located where the distributor would normally be on your engine.
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Re: 1994 ford taurus
Replace the crank sensor on your car. The crank sensor tells when the plugs should fire. When it decides to go bad, the cylinders will overly fuel themselves because it's not firing at the right time creating your fuel smell.
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Do not top off your gas tank. The gas is going into carbon canister which is only for fuel vapors to go into (carbon canister opening near the top of fuel neck near the gas cap). Your flooding the fuel vapor canister with liquid fuel; of course you are going to get a sensor message...
'Evap emmission,control sys leak
P0443 The fuel vapor canister reduces that gas smell on hot days outside/inside of car. The fuel vapor canister fillers bad smells from gas tank on hot days when the gas expands and burps fumes through carbon canister filter. From the canister (gas vapor fumes) goes back into the engine to be burned again...it's a closed loop for vapors to be recycled though engine. Don't worry, once the carbon canister dries out and no longer flooded with raw fuel the code should go away...just don't let the top off fuel tank back flow into the 'Evap emission control' carbon filter near the top and close to the gas cap...:)
stop shooting engine and leaks will , decrease some. LOL !
2004 Toy Highlander.
what you replaces is of no bearing.
what counts is realty.
find the leak.
if it really is raw gas, do not drive car or garage it.
park it far from home and people. (curb it.)
gas fumes if not real raw fuel (liquid) can come from EVAP canister
hose fell off.
first look for injector leaks (outside body)
and fuel hose leaks, (look at these first as they are 10x more dangerous that others)
does the PCM scans show DTC errors?
scan it, what do you have.?
if there is raw fuel dripping from the exhaust manifold that means
the INJECTors are stuck on or leaking, this is one of the most dangerous conditions on all EFI cars.
they to look more carefully
or better get a ASE mechanic to check the car out.
Make sure the computer has been reset since changing the cap. Autozone, etc. will scan for free.
The smoke test should have caught the problem provided the shop looked at the gas tank too. There can be a problem in the electric solenoid valving for the canister which can be concealing a leak beyond the solenoid valving. If the solenoid is closing off the flow, then it can also close off the leak.
As for smelling gas, its the fumes which flow in these hoses, not raw gas. If the Vacuum system draws the fumes in, or if the leak is rearward, there is less of a chance of smelling the fumes. Rushing air from driving will dissipate many fumes.
Fuel tanks have a vent tube and a charcoal cannister to capture the gas fumes from the tank. It's possible there is a cracked or loose hose, faulty fuel cap, bad canister or a fuel leak and any one of many connections. Investigate for sign of raw fuel along the underside of te vehicle, and in the engine compartment. Attempt to follow the smell to isolate the location of a leak.
auto tech for 15 years you have a crack on the fuel pump return line on the fuel pump assemble I have done many Taurus with the same problem the fuel puddles up on top of the tank and smells bad replace the whole fuel pump assemble and the smell will go away.
no theres not a valve for smells, it usually means that when your tank is empty, it smells bad because most likely your running on water and gas, which causes a bad smell, a good way to fix it, is to pour a bottle of a subtence called HEAT, thats what it says on the bottle, then just pour all of it in your gas tank and what it does is make all the water that may be in your gas tank dissapear.. hope this helps...and if it doesn't that usually means that you should replace your fuel fillter.