Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1996 Acura Integra GS-R, 2D CoupeFACTORY OEM SERVICE PROCEDURE
Pressure Testing
- After relieving fuel pressure, connect Fuel Pressure Gauge (07406-0040001 ) at 6-mm service bolt location. Reconnect negative battery cable. Start engine. Observe fuel pressure on gauge. See REGULATED FUEL PRESSURE . If vehicle will not start, but has spark and no fuel pressure, inspect fuel pump relay. See FUEL PUMP RELAY .
- Disconnect vacuum hose from pressure regulator (fuel pressure should rise), and check for manifold vacuum. If vacuum does not exist, inspect for restriction in vacuum port or hose. Plug vacuum hose, and observe fuel pressure. See REGULATED FUEL PRESSURE .
- If pressure is higher than specified, inspect for pinched or clogged fuel return line between fuel rail and fuel tank. If no problem is found in fuel line, replace pressure regulator.
- If pressure is lower than specified, inspect for plugged fuel filter. If filter is not plugged, lightly pinch off fuel return line. If fuel pressure does not rise, replace fuel pump. If fuel pressure rises, replace pressure regulator.
REGULATED FUEL PRESSURE (1)
| Application | At Idle W/O Vacuum psi (kg/cm2 ) | At Idle W/ Vacuum psi (kg/cm2 ) | ||
|---|---|---|---|---|
| Except GS-R | 40-47 (2.8-3.3) | 31-35 (2.2-2.5) | ||
| GS-R | 48-55 (3.4-3.9) | 40-47 (2.8-3.3) | ||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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