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Fuel System
fuel
Plain explanation
Stores petrol in the tank and delivers it to the engine in precisely measured amounts.
Technical
EFI system with tank, fuel pump (in-tank or external depending on revision), lines, filter, rail, and injectors. ECU controls injector pulse width based on sensor inputs.
Function & location
Store fuel safely and deliver metered fuel for combustion.
Fuel tank above engine; pump and lines route along frame to throttle body/injectors.
Connections
- Fuel tank
- Engine ECU
- Air intake
- Ignition system
- Evaporative emissions (where fitted)
Subcomponents
Fuel pump module
Pump inside or associated with tank.
Fuel lines
High- and low-pressure hoses.
Fuel filter
Filters particulates from fuel.
Fuel rail
Distributes fuel to injectors.
Common wear & symptoms
- Hardened line connections
- Clogged filter
- Pump wear over high mileage
- Hard starting
- Power loss
- Fuel smell
- Engine warning light
Maintenance notes
- Inspect visible lines for cracking or weeping
- Never work on fuel system near open flame
- Use compatible fuel grade per manual
Related guides
Related components
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