For the last 2-3 months, my 2001 Subaru Legacy has been intermittently smelling like gas. It comes and goes, but seems to happen most often when my tank is just above the half-way mark. Sometimes around the empty mark. The check engine light also came on last week, but went off later that day and hasn't come back on since. The smell of gas is inside and outside the car, but if I turn the heater off, the smell inside subsides. Any suggestions on what might be causing this?
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I'm afraid your Subaru has burnt a valve. Typically it is the right rear cylinder (looking at it from the front of the car) that burns them. this is a common problem. It's an expensive fix. There is a chance however, it may just be a fouled spark plug. Again, it's usually the right rear spark plug that fouls. You can pull each plug wire one at a time (start with the right rear one) until you find one that doesn't make the engine run worse. Then change that plug and try it. Or replace all the plugs. If one is fouled then the others may also need changing.
I think you have a failed turbo charger, they last around 100,000 miles. Have a dealer confirm this is the problem as the part is very expensive ans most be replaced by a professional to turn out right.
check the fuel line hose near the fuel regulator for wear as they tend to leak or corrode causing a gas smell inside the car. My 2000 Kia Sportage just had the same problem with the gas smell inside the car.