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Toyota Engine >> VALVE LASH ADJUSTMENT ON 1998-2003 TOYOTA 1.8L ENGINES


Valve Lash Adjustment For
1998-2003 Toyota 1.8L Engines

The AERA Technical Committee offers the following information regarding valve lash adjustment for 1998-2003 Toyota 1.8L engines. Beginning in the year 2000 Toyota offered two engines with the 1.8L designation. They can be identified first by a 1ZZ-FE (1762 CC) engine, and then a 2ZZ-GE (1794 CC) engine.

The valve lash specification for exhaust locations is different for the two engines. Refer to the chart below while adjusting valves for these engines.

Years Engine Location Specification

1998-2003 1ZZ-FE Exhaust .010-.014 (.25-.35 MM)
1ZZ-FE Intake .006-.010 (.15-.25 MM)

2000-2003 2ZZ-GE Exhaust .014-.018 (.35-.45 MM)
2ZZ-GE Intake .006-.010 (.15-.25 MM)

These engines use different methods of adjusting the clearance; the 1ZZ-FE uses one of thirty-five different thickness lifters, while the 2ZZ-GE uses one of forty-one different lash caps. The 1ZZ-FE also requires camshaft removal to facilitate lifter replacement (lash adjustment), whereas the 2ZZ-GE lash cap replacement to perform valve lash adjustment.

The AERA Technical Committee
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