MDX V6-3471cc 3.5L (2002)
11. Check to see if the fuel pump is running: listen to the injector rails underneath the intake manifold cover while an assistant turns the ignition switch
ON (II). You should hear the fuel flow through the injector rails for about 2 seconds when the ignition switch is turned ON (II).
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If the pump runs, go to step 12.
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If the pump does not run, test the fuel pump.
12. Read the pressure gauge (with the fuel pressure regulator vacuum hose disconnected and clamped). The pressure should be 330 - 382 kPa (3.4 -
3.9 kgf/sq.cm, 48 - 56 psi).
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If the pressure is OK and engine is running, the test is complete. If not running, repair the cause, then continue this test.
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If the pressure is too high, check for a pinched or clogged fuel return hose or line.
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If the pressure is too low, check for a clogged fuel filter and for leaks in the fuel lines.
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If the pressure is out of spec and the fuel lines are OK, replace the pressure regulator.
13. Reconnect the vacuum hose, remove the pressure gauge, and reinstall the fuel pulsation damper with a new washer. Tighten the fuel pulsation
damper to 22 N.m (2.2 kgf.m, 16 lbf.ft).
NOTE: Disassemble and clean the fuel pressure gauge attachment thoroughly after use.
