Question about 1992 Mercury Topaz

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Need to know how to install a new distributor and the firing order for a 4 cyl

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Firing order is 1342. #1 cylinder is closest to front. (By pulleys)



See Figures 1, 2, 3 and 4
Engine Not Rotated

  1. Disconnect the negative battery terminal.
  2. Turn the engine over until No. 1 cylinder is at TDC of the compression stroke.
  3. Remove the distributor cap. Remove the wire harness connected to the side of the distributor.
  4. Mark the position of the distributor base in relation to the engine block with white paint or other suitable marking material, for reference when reinstalling the distributor.
  5. Loosen and remove the distributor hold-down bolt and clamp.
  6. Carefully begin lifting the distributor up and out. Once the shaft is clear of the engine compartment, inspect the shaft for cracks in the O-seal, the condition of the shaft drive gear and any other part which could lead to distributor problems in the future.

To install:
  1. Check to make sure the engine is still at TDC. Inspect distributor shaft hole to make sure it is free of dirt.
  2. Rotate distributor shaft until the painted mark on rotor is pointing toward painted mark on engine block made during removal.
  3. Continue rotating rotor slightly so leading edge of the vane is centered in vane the switch stator assembly.
  4. Dip entire distributor gear in engine assembly lubricant D9AZ-19579-D or equivalent.

If installing a new distributor, ALWAYS add engine assembly lubricant to the engine oil by pouring it through distributor hole onto the camshaft gear. Run engine at idle for at least five minutes before driving.
  1. Rotate distributor in block to align leading edge of vane and vane switch stator assembly. Verify rotor is pointing at No. 1 mark on distributor base.

If vane and vane switch stator cannot be aligned by rotating distributor in cylinder block, remove distributor enough to just disengage distributor gear from camshaft gear. Rotate rotor enough to engage distributor gear on another tooth of the camshaft gear.
  1. Install the distributor retaining bolt and tighten so the distributor can just barely be moved.
  2. Install the distributor cap and, tighten screws to 18-23 inch lbs. (2.0-2.6 Nm).
  3. Reconnect battery cable. Start vehicle, and check timing. If timing needs adjustment, refer to the Ignition Timing section.
  4. After timing has been set, tighten distributor hold-down bolt to 17-2 ft. lbs. (23-34 Nm).

Engine Rotated with Distributor Removed
  1. If the crankshaft was rotated while the distributor was removed, the engine must be brought to TDC on the compression stroke of the No. 1 cylinder.
  2. Remove the No. 1 spark plug. Place a finger over the hole and rotate the crankshaft slowly in the direction of normal rotation until engine compression is felt.
  3. When engine compression is felt at the spark plug hole, indicating that the piston is approaching TDC, continue to turn the crankshaft until the timing mark on the pulley is aligned with the 0 mark on the engine front cover.
  4. Turn the distributor shaft until the ignition rotor is at the No. 1 firing position.
  5. Rotate distributor shaft so the blade on rotor is pointing toward paint mark on distributor base made during removal.
  6. Continue rotating rotor slightly so leading edge of the vane is centered in vane switch stator assembly. Verify rotor is pointing at No. 1 mark on distributor base.

If vane and vane switch stator cannot be aligned by rotating distributor in cylinder block, remove distributor enough to just disengage distributor gear from camshaft gear. Rotate rotor enough to engage distributor gear on another tooth of the camshaft gear.
  1. Install the distributor retaining bolt and tighten so the distributor can just barely be moved.
  2. Install the rotor and distributor cap and connect all wiring. Tighten distributor cap to 18-23 inch lbs. (2.0-2.6 Nm).
  3. Reconnect battery cable. Start vehicle, and check timing. If timing needs adjustment, refer to the Ignition Timing section.
  4. After timing has been set, tighten distributor hold-down bolt to 17-2 ft. lbs. (23-34 Nm).

Posted on Nov 17, 2009

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