FUEL ODOUR INSIDE THE CAR?
If you have that irritating fuel odour in your Subaru, you are probably just like one of the few customers we have recently seen in the workshop.
Subaru and some other car manufacturers use plastic fuel filter/pump assembly that is submerged in the fuel tank. A typical operation should not produce any fuel smell in the cab. This vital part of your Subaru has a critical role in running your engine. It keeps a steady fuel flow with a minimal amount of air running at constant pressure and filtered from the servo stations pump debris. It consists of a fuel filter, fuel pump, fuel pressure regulator, wiring and electrical connectors. They run the power to the fuel pump through the plastic cap of the assembly.
IN-TANK FUEL FILTERS ARE DUE EVERY 80000KM
Most car manufacturers, including Subaru, recommend replacing the in-tank fuel filter every 80000km. This will avoid clogging, reduce fuel flow, engine cutoffs and fuel smell in the car. In rare cases, the limit will be raised to 100000km. If you make a simple calculation, in its lifetime, every in-tank fuel filter will have to clean 6400 litres of fuel. It will probably handle even more if it wasn’t for the electrical connectors.
WHAT CAUSES THE FUEL SMELL INSIDE THE CAR
As any other component of the car, your Subaru parts have a lifetime. The car manufacturers calculate it based on two components. First, the stress the component is exposed to. Second, the elements that deteriorate the material the part is made of.
Because the fuel pump assembly is submerged in the fuel tank, it is exposed to the powerful dissolvent called petrol gasoline, and also to moisture. Yes, there is plenty of moisture in the car’s fuel tank. The humidity causes the electrical terminals to corrode, and by the electrical current to the fuel pump, they would start to heat up. Next, the heat will melt the plastic cap of the fuel pump assembly and let the fuel pushing underneath to make its way to the wiring above. If the fuel spills there it can make its way through the wiring cables inside the car cabin and under the set. That makes it so hard to diagnose. The fuel smells a lot, but there are is no indication of where it is coming from.
HOW TO FIX FUEL SMELL IN THE CAR
It is simple. Replace the in-tank fuel filter assembly. The new part will come with new electrical connectors. All that is necessary to clean the connectors in the car and the fuel pump itself.
We can replace the in-tank fuel filter of your Subaru and get rid of the fuel smell in the car for you in just a few hours. Book now for a free consultation.
WHAT TO DO TO PREVENT FUEL SMELL IN THE CAR
As we mentioned earlier, the components in the car have their limits. If your Subaru has 80000km or more on the odometer, ask for a quote to replace the in-tank fuel filter assembly at your next service. Just keep in mind that the fuel level in the tank should be less than 3/4, so we can safely replace the filter. Otherwise, it might cost additional to drain the excess fuel.
WHAT CAN HAPPEN IF THERE IS FUEL SMELL IN THE CAR
It can cause several problems, and none of them is pretty.
- Engine Cutoff
- Paint and material dissolving
- Trouble breathing
It is not Subaru’s fault that the fuel may leak in the cab. If the in-tank fuel filter is replaced when it is due, the electrical terminals will never corrode and melt. The same goes for every single part in your car.
If you are unsure what needs to be done to avoid fuel odour in the cab, just give us a call. We will be happy to help.