Fuel system diagram

it sounds like there is no fuel getting to intake.
when you step down on accelerator, it is designed to squirt a shot of fuel into the intake, which would keep it running for a few seconds. same as pouring gas down intake.

you never stated if you had carburation or injection system, in either case no fuel is getting through on its own.
which could be a variety of problems depending on which system you had.

Make and Model, year of vehicle?
I'm assuming the vehicle won't run unless you pour gas into the intake. If the vehicle will start and run while manually feeding gas to the engine, you can rule out spark and timing issues. Usual suspects in fuel system are dead fuel pump (electrical or mechanical?) clogged delivery system ( fuel line, filter, injector or jet) or intake leak (bad gasket or seal, vacuum leak, stuck valve).

gas or diesel ? if its gas find shrader valve (tire valve looking thing) on injector fuel manafold top of engine tap key on/off several times depress center of valve with plastic point nothing metal (old ink pen?) look for fuel to briefly spray out a bit (shield eye's) no fuel ck fuel pump , filter and inertia switch ,yes fuel ck all the sensors the injectors are not firing
Diesel ? A 86 would be A IdI type so loosen fuel fitting(one turn) to top of # 4 injector (you can't reach others) Do not remove it (High pressure!!!) crank engine several times over look for fuel leak at fitting thats loose ,it might even start if injector pump was airlocked that happens alot from sitting ,if it does don't get your body near loose fitting(high pressure) too dangerous shut off key and tighten fitting then restart engine

Hi Michael: here you have two diagrams...






DTC P0440 code indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
A code P0440 could mean one or more of the following has happened:

• The gas cap is not installed or working properly
• The purge solenoid has failed
• The canister is plugged and not working properly

Additional details could find in this links Fault Codes on Cars & Trucks or other diagrams in Cars & Trucks Vacuum Diagram.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Component location diagrams for most 2003 Suzuki Aerio cars and light trucks sold in the U.S. from 1990+.
Ignition System Components Location Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

TP Sensor

Ignition Coil

ECM

MAF Sensor

CMP Sensor

Electronic Shift Control System Components Location Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Data Link Connector

Transmission Range Sensor

Throttle Position Sensor

Pressure Control Solenoid Valve

Battery

Instrument Panel For Connector Layout Diagram Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Clutch Switch

Thermistor

Brake Light Switch

Blower Motor Relay

Heater Fan Motor

Instrument Panel Harness Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Wiper Switch

Washer Switch

Data Link Connector

Turn Signal Relay

Radio

Headlight System Location Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Headlight Relay

Headlight

Clearance Light

Headlight Diode

Clearance Light Relay

Fuel System Components Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Fuel Pump Relay

Fuel Tank Pressure Sensor

EVAP Canister

Fuel Tank Pressure Control Valve

Fuel Filler Cap

Floor For Single Unit Parts Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Wheel Speed Sensor

ABS Control Module

G Sensor

Air Bag Control Module

EVAP Canister Vent Valve

Instrument Panel For Ground Point Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

Instrument Panel Ground Points

Engine Compartment For Single Unit Parts Diagram for 2003 Suzuki Aerio 2.0 L4 GAS
Components on diagram:

Throttle Position Sensor

Horn Relay

Radiator Fan Control Relay

Cruise Control Module

Condenser Fan Relay

Engine Compartment Components Diagram for 2003 Suzuki Aerio SX 2.0 L4 GAS
Components on diagram:

MAP Sensor

Knock Sensor

Noise Suppressor

Heated Oxygen Sensor

Check that your Exhaust Gas Recycling Valve (EGR) is not stuck or plugged. A percentage of exhaust gas is recycled through your intake manifold. If the 10 percent,15 percent, 20 percent, etc.exhaust gas is not sent through the intake manifold it has to be replaced with fuel /air mixture. Using more fuel/air instead of spent gas lowers your fuel economy. Other things, try using fuel system cleaner in your gas, make sure your air cleaner is not dirty or plugged, new plugs can make for smooth running, bad distributor cap, bad wires , etc.

You must have a problem with the fuel injection system The gas is leaking out after the fuel pump but before it gos throught the injectors and ending up in the intake manifold It could be one of the lines has split or some how become dislouged inside the intake manifold That the olny thing i can think of that could cause this to acure

You may have a ruptured diafram in the fuel pressure regulator which is putting unmetered fuel in the vacuum/intake system. It is located underneath the upper plenum. If you remove the vacuum hose going to it and fuel comes out, it is defective. You can find the hose diagram for the car on the hood or radiator core support to know which hose it is.

Bonneville, LeSabre, Park Avenue 2000-2005 Intake Manifold - Removal & Installation

3.8L Engine
VIN 1 Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Relieve the fuel system pressure.
3. Drain the cooling system.
4. Remove or disconnect the following:
   Negative battery cable Supercharger Thermostat housing Exhaust Gas Recirculation (EGR) tube at the intake manifold Engine Control Temperature (ECT) sensor Intake manifold

To install:

1. Install or connect the following:
   Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm). ECT sensor connector EGR tube to the intake manifold Thermostat housing Supercharger Negative battery cable
2. Refill and bleed the cooling system.
3. Run the engine and check for leaks and proper engine operation.

VIN K Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Relieve the fuel system pressure.
5. Remove or disconnect the following:
   Fuel injector sight shield Air inlet duct Spark plug wires from the right side Manifold Absolute Pressure (MAP) sensor Vacuum lines from the intake manifold Fuel lines Fuel injector electrical connectors Fuel regulator vacuum line Fuel rail from the intake manifold Exhaust Gas Recirculation (EGR) heat shield Throttle cable bracket from the cylinder head mounting bracket and the throttle body cables Throttle body support bracket Upper intake plenum and gasket Thermostat housing Electrical connector from the Engine Coolant Temperature (ECT) sensor Drive belt tensioner assembly EGR valve outlet pipe Lower intake manifold
   
   
   Fig. Exploded view of the intake manifold and related components-3.8L (VIN K) engine
   

To install:



Fig. Upper intake manifold torque sequence-3.8L (VIN K) engine



Fig. Lower intake manifold torque sequence-3.8L (VIN K) engine

1. Install or connect the following:
   Intake manifold using new manifold gaskets. Torque the bolts in sequence to 11 ft. lbs. (15 Nm); then, re-torque to 11 ft. lbs. (15 Nm). EGR valve outlet pipe Drive belt tensioner assembly. Torque the tensioner bolts to 37 ft. lbs. (50 Nm). Electrical connector to the ECT sensor Thermostat housing Upper intake plenum. Torque the intake plenum bolts to 88 inch. lbs. (10 Nm). Throttle body support bracket Throttle cable bracket to the cylinder head mounting bracket and the cables to the throttle body lever EGR heat shield Fuel rail. Torque the fuel rail bolts to 88 inch. lbs. (10 Nm). Fuel lines Fuel regulator vacuum line Fuel injector electrical connectors Vacuum lines to the intake manifold MAP sensor Spark plug wires Fuel injector sight shield and air inlet duct Negative battery cable
2. Refill and bleed the cooling system.
3. Run the engine and check for leaks and proper engine operation.

Hope this help (remember rated this).

sound like fuel pump you put gas in it it runs.its not pump gas to the fuel system.change fuel filter if it been a while.check fuel pressure.