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Home >> Mazda >> 1994 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Timing Belt >> Timing Belt Replacement - 1.8L - DOHC, BP Engine >> Removal & Installation >> Timing Belt >> Removal (MX-5 Miata)

Removal (MX-5 Miata)

  1. Disconnect negative battery cable. Drain cooling system. Remove front strut bar and strut brackets, if equipped.
  2. Disconnect Intake Air Temperature (IAT) sensor harness connector. Remove air cleaner cover and necessary air hoses or pipes. Remove drive belt(s).
  3. Remove Camshaft Position (CMP) sensor, if equipped. Remove Crankshaft Position (CKP) sensor.
  4. Remove high tension leads and ignition coil(s). Remove spark plugs.
  5. Remove upper radiator hose and by-pass hoses from thermostat housing. See Fig 1 or Fig 2 .
  6. If equipped with an control valve and pipe, remove oil pipe and cover with a shop rag to prevent oil spill. Remove Oil Control Valve (OCV) case.
  7. Remove water pump pulley, crankshaft pulley and crankshaft position sensor plate. See Fig 1 or Fig 2 .
  8. Remove crankshaft pulley from crankshaft pulley boss. Remove plate with crankshaft pulley. Ensure crankshaft pulley boss locating pin faces straight up. Holding crankshaft pulley boss stationary, remove crankshaft pulley boss bolt. Remove pulley boss.
  9. Remove upper, middle, and lower timing belt covers. If timing belt is to be reused, mark timing belt with arrow to indicate rotation direction.
  10. Install pulley boss on crankshaft to temporarily tighten with pulley lock bolt. Ensure timing marks on camshaft sprockets and crankshaft sprockets are aligned. See Fig 3.
  11. Loosen timing belt tensioner lock bolt. Move tensioner away from belt with spring fully expanded, and tighten lock bolt. Remove timing belt.
Fig 1: Exploded View Of Timing Belt & Components (1994-00 MX-5 Miata)
G99B54107Courtesy of MAZDA MOTORS CORP.
Fig 2: Exploded View Of Timing Belt & Components (2001-04 MX-5 Miata)
G00214414Courtesy of MAZDA MOTORS CORP.
Fig 3: Aligning Camshaft & Crankshaft Timing Marks
G99H54103Courtesy of MAZDA MOTORS CORP.
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