Why Can't the Pajero's Fuel Tank Be Filled Completely?

2 Answers
VanPreston
09/05/25 5:20am
Pajero's fuel tank not being able to be filled completely could be due to an issue with the carbon canister. Basic Information about the Carbon Canister: The carbon canister is generally installed between the gasoline tank and the engine. Since gasoline is a volatile liquid, the fuel tank is often filled with vapor at normal temperatures. The fuel evaporation emission control system's role is to direct the vapor into the combustion process and prevent it from escaping into the atmosphere. The activated carbon canister storage device plays a crucial role in this process. Working Principle of the Carbon Canister: The carbon canister is actually part of the gasoline evaporation control system (EVAP). This system was introduced to prevent fuel vapor from escaping into the atmosphere after the engine stops running. Since 1995, it has been mandated in China that all newly manufactured vehicles must be equipped with this system. First, let's look at how it works: after the engine is turned off, gasoline vapor mixes with fresh air inside the canister and is stored in the activated carbon canister. When the engine starts, the solenoid valve installed between the activated carbon canister and the intake manifold opens. The gasoline vapor in the activated carbon canister is drawn into the cylinder by the vacuum in the intake pipe, where it mixes with clean air and participates in combustion. This not only reduces emissions but also lowers fuel consumption.
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LaAlan
09/17/25 5:45am
I often encounter the frustrating issue of not being able to fill up the fuel tank completely when off-roading in my Pajero. The fuel pump nozzle always stops prematurely, even though the display indicates there's still room for about 10 liters. The main reasons are usually the overly sensitive anti-overflow sensor on the nozzle, and the Pajero's unique fuel tank design with special ventilation holes that can cause gas to escape unevenly during refueling, triggering the nozzle to stop. Another possibility is a clogged carbon canister, which increases pressure inside the fuel tank and misleads the nozzle. Suggestions include trying a different gas station, slowing down the refueling speed, adjusting the nozzle angle to prevent liquid splashing, or visiting a professional shop to check the evaporation system. As a long-term owner, this doesn't hinder driving, but it's essential to ensure safe refueling before outdoor trips to avoid running out of fuel midway. Don't obsess over the numbers; as long as the actual range is sufficient, it's fine.
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