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Mazda Ed
Mazda Ed, Auto Service Technician
Category: Chevy
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Experience:  ASE Master Technician, Mazda Master Technician, GM and Ford factory trained. 15 years experience.
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How do I set timing on a 98 z71 5.7 vortec with the distributor out

Customer Question

How do I set timing on a 98 z71 5.7 vortec with the distributor out
Submitted: 7 years ago.
Category: Chevy
Expert:  Mazda Ed replied 7 years ago.

Distributor Installation


    Object Number: 195336  Size: SH

  1. Bring cylinder number one piston to Top Dead Center (TDC) of compression stroke.
    Object Number: 500690  Size: SH

  2. Remove the distributor cap bolts and discard.
  3. Remove the distributor cap.
    Object Number: 523516  Size: SH

  4. Install a NEW distributor gasket onto the distributor.
    Object Number: 492137  Size: SH

  5. Align the indent hole on the driven gear with the paint mark on the distributor housing.
  6. Ensure that the distributor rotor segment points to the cap hold area.
    Object Number: 523746  Size: SH

  7. Align the slotted tang in the oil pump driveshaft with the distributor driveshaft. Rotate the oil pump driveshaft with a screwdriver if necessary.
  8. Align the flat (1) in the distributor housing toward the front of the engine.
  9. Install the distributor and distributor clamp.
    Object Number: 68505  Size: SH

  10. Once the distributor is fully seated, align the distributor rotor segment with the number 8 pointer that is cast into the distributor base.
  11. If the distributor rotor segment does not come within a few degrees of the number 8 pointer, the gear mesh between the distributor and camshaft may be off a tooth or more. Repeat the procedure in order to achieve proper alignment.
    Object Number: 366609  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  12. Install the distributor clamp bolt.

    Tighten
    Tighten the distributor clamp bolt to 25 N·m (18 lb ft).


    Object Number: 500690  Size: SH

  13. Install the distributor cap onto the distributor.
  14. Install the NEW distributor cap bolts. Do not overtighten the NEW distributor cap bolts.

    Tighten
    Tighten the distributor cap bolts to 2.4 N·m (21 lb in).


    Object Number: 341359  Size: SH

  15. Install the ignition coil wire harness.

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Mazda Ed
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ASE Master Technician, Mazda Master Technician, GM and Ford factory trained. 15 years experience.