Question about 1988 Mitsubishi Mighty Max

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Where is the fuel filter? on a 1988 mitsubishi mighty max

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To locate the inline filter, follow the fuel line back from the throttle body. Inline filters are often mounted to the frame rail underneath the vehicle. It may be necessary to raise and safely support the vehicle using jackstands in order to access the filter.

  1. First, you MUST reduce the pressure in the fuel system; refer to Section 5 for this procedure.
  2. Unfasten the negative battery cable from the battery.
  3. Remove the air cleaner assembly; refer to the air cleaner filter removal procedure described earlier in this section.
  4. Using an open-end wrench to hold the fuel filter stationary, loosen the bolt for the banjo type connector on top of the fuel filter with a box wrench. Perform the same procedure to the inlet connector on the bottom of the filter.
  5. Remove the bolt or nuts attaching the filter to the bracket and remove it.

Posted on Mar 07, 2010

  • Greg Bernett
    Greg Bernett Mar 07, 2010

    Take out the carpet in the cargo area and lift up the floor cover to remove the fuel pump access cover. Unplug the fuel pump harness connector, then start and run the engine until it stalls to reduce the fuel pressure.

    Fuel pump harness location-Pick-up models

    1. To install the new filter, reverse the above procedure. A torque wrench is recommended to tighten the bolts for the fuel line banjo fittings. If the banjo fitting washers are damaged, replace them. Tighten the outlet fitting to 18-25 ft. lbs. (24-34 Nm) and the inlet fitting to 25 ft. lbs. (34 Nm).

    2. Reconnect the negative battery cable, then start the engine and check for leaks.



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