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.
3.2CL & 3.2TL
2004 Acura 3.5RLSECTION 3.2CL & 3.2TL
- Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Remove pulsation damper and connect Fuel Pressure Gauge (07406-004000A) in its place. Reconnect negative battery cable. Disconnect and plug fuel pressure regulator vacuum hose. Observe fuel pressure on gauge. See REGULATED FUEL PRESSURE . If vehicle will not start, listen for fuel flow at fuel rail while an assistant turns ignition switch on. You should hear fuel running through injector rails for about 2 seconds when ignition is turned on. If fuel pump runs, observe fuel pressure on gauge. If fuel pressure is okay and engine is running, go to next step. If fuel pressure is okay and engine is not running, repair cause and go to next step. If fuel pump does not run, check fuel pump.
- Ensure manifold vacuum is present at fuel pressure regulator vacuum hose. Reconnect fuel pressure regulator vacuum hose with engine at idle. Observe fuel pressure on gauge. See REGULATED FUEL PRESSURE . If fuel pressure is not as specified, go to next step. If fuel pressure is okay, go to step 4 .
- Disconnect vacuum hose to fuel pressure regulator while watching fuel pressure gauge. See REGULATED FUEL PRESSURE
. If fuel pressure did not increase, check vacuum hose for leakage, clogging or loose connections. If okay, replace pressure regulator. If fuel pressure increased within specification and all readings were okay, go to step 4
. If fuel pressure increase was out of specification, check for:
- If increase was less than specified, check for clogged fuel filter or leaking fuel lines.
- If fuel pressure was more than specified, check for pinched or clogged fuel return hose or line.
Repair as necessary and go to next step.
- Turn ignition off. Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Reconnect vacuum hose to fuel pressure regulator. Remove fuel gauge. Reinstall fuel pulsation damper with a NEW washer and tighten to 16 ft. lbs. (22 N.m).
REGULATED FUEL PRESSURE (1)
| Application | At Idle W/O Vacuum psi (kg/cm2 ) | At Idle W/ Vacuum psi (kg/cm2 ) | ||||
|---|---|---|---|---|---|---|
| MDX | 57-64 (4.0-4.5) | 48-55 (3.4-3.9) | ||||
| RSX | 47-54 (3.3-3.8) | (2) | ||||
| 3.2CL | 47-54 (3.3-3.8) | 40-46 (2.7-3.3) | ||||
| 3.2TL | 48-55 (3.4-3.9) | 40-46 (2.7-3.3) | ||||
| 3.5RL | 43-51 (3.0-3.6) | 35-42 (2.5-3.0) | ||||
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RENDER: 1.0x
NO RELATED
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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.