98 dodge grand caravan fuel tank filler tube schematic

Many of them that come with a long plastic tubing to blow the air through will fix a clogging problem by blowing it out. You can use compressed air to check it out.You will know if there’s a blockage because it’s a short line. Take the canister vent line off the gas tank and blow through it.To further diagnose the problem, follow these steps. A line that isn’t blocked will emit a gurgling sound. You have to be careful when checking your fuel tank vent so you don’t damage the tank or allow gas to get into the air.įirst, you find the air vent line and put a compressor into it. Read: Why a Car Won’t Start in the Rain? How Do You Check Your Fuel Tank Vent? This results in tank damage as well as a gas smell coming through the line. Another common problem is that wasps sometimes build nests in the fuel vents. A trapped line will build pressure or vacuum in your tank and eventually that will purge the vent. It can’t have a bend or dip because that is how condensation or fuel gets trapped. A long time ago, manufacturers used gas caps with vents to keep the right air, pressure, and vacuum but that proved ineffective because the fuel would spill out.Ī vent line is higher than the fuel filler neck or any other point on the tank.

Fuel is in a constant state of expansion and contracting depending on when it warms up and cools down.

98 dodge grand caravan fuel tank filler tube schematic