: Remove the upper and lower plastic timing belt covers.
The service manual includes a "Diagnostics" appendix. This is often the most referenced section.
The manual details the specific alignment marks: the crankshaft pulley "0" mark to the oil pump body, and the camshaft pulley "I" (for intake) and "E" (for exhaust) marks facing up. Performing this without the manual often results in a misalignment of one tooth, causing a "P0340" code or rough idle. Toyota 5a-fe Engine Service Manual
Disconnect the negative battery terminal. Remove the right-front wheel and splash shields to gain access to the crank pulley.
Hardened valve stem seals or gummed-up oil control rings. : Remove the upper and lower plastic timing belt covers
Ethylene-glycol based (Toyota Long Life Coolant) Service Intervals
: Inspect the distributor cap and rotor for corrosion. Check the resistance of the spark plug wires. Clean the MAP sensor vacuum line filter. The manual details the specific alignment marks: the
: Inspect or replace every 50,000 km to 100,000 km .
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