If you keep gassing after this point to top off the tank or round up to the nearest dollar (which people often do when paying cash), it can overfill the tank.Īn overfilled tank will release fuel vapor from the vent tube (which is normal) but causes your Jeep Grand Cherokee to have a bad fuel smell.īurning off the extra gas will eliminate the fuel smell in your vehicle. Modern gas pumps will fill a gas tank until they sense it is full. You can rule this out if you are consistently gassing up and smelling fuel after. If this is the case, it can make its way up into your Grand Cherokee’s cabin, and it can take a while for the smell to dissipate. If you have just your gassed vehicle up, you may have pulled somewhere where fuel was on the ground. Since the fuel inlet is behind the driver, you shouldn’t smell the smell of gas unless you are going down the road. Once that happens, it’ll begin to let fuel vapor out and into the air. The gas cap’s job is to keep the fuel vapor and fuel in the gas tank. If you see fuel on the ground under your Grand Cherokee, jump to section 5. Here are the most common things that would make your Grand Cherokee smell like gas. But there are other, less likely causes as well. It would be best to treat your vehicle as though you have a fuel leak (don’t drive it) until you know there isn’t one.Ī bad gas cap typically causes the smell of gas, the evaporative emissions system leaking, overfilling the gas tank, or an actual fuel leak. If your Jeep Grand Cherokee smells like gas, it may indicate a serious issue.
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