Gas fumes are very strong in the blazer. I had the code reset and it did fine for a while. I was told this is the code for my purge vent solenoid. Can my solenoid be bad or is something else going on. Help!
If that was the code for the purge vent solenoid i would say it is bad since you smell fumes. because that solenoid allows the vacuume from the engine while it is running to pull the excess fumes from the fuel tank and burn them off inside the engine. also might want to check lines under the hood associated with the solenoid to make sure excess air pressure from the fumes building up didn't blow a vac. line off. i would also check the condition of your fuel cap, if it doesn't seal good it could also cause a similar problem.
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Possibly the vent line that routs fuel vapors from the gas tank to the charcoal canister has come loose. Check the hoses and lines around the fuel tank for leaks. There will be a fuel feed line to engine, a fuel return line from engine, and the evap. line or hose that carries the fuel vapors.
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.
gas is a very high evaporative liquid..fumes extremely strong..if overfull it will smell..and if emissions equipment has issues it will smell also.. when the engine gets hot, any gas present will vent off until the engine cools..thats the fuels evaporative nature..still keep an eye out for issues..
I would check the gas cap to make sure the gasket is seating correctly on the filler neck. Also check, if you can, the filler neck from the gas cap down to the tank. If it is damaged, it could seep gas fumes. If you see no other signs of an obvious leak on the garage floor, it's likely a gasket issue in the fuel fill side of the system. It does not take much fumes to smell it strongly.
The "cause" would be a fuel system or EVAP system leak. If the fumes are that strong, then I would take the vehicle back to Ford again and make the sevice manager stick his nose in it and then tell you there is no problem....