1az Fse Engine Toyota Repair Manual -

The pump (driven off the exhaust camshaft) can leak fuel into the engine oil. Smell your dipstick. If it smells like petrol, stop driving.

Manual procedure: Replace pump gasket and spill valve. Torque to 9.8 N·m.
Warning: Never loosen the high-pressure lines with the engine warm. Fuel is at 120 bar. Always depressurize first (remove fuel pump relay and crank engine).

A. The D-4 (Direct Injection 4-stroke) System This is the defining feature of the FSE engine compared to the standard FE. 1az fse engine toyota repair manual

B. VVT-i (Variable Valve Timing with intelligence)

C. Cylinder Block

D. Cylinder Head

E. Ignition System

Toyota no longer prints them for this generation, but here are reliable sources:

Avoid: Generic "All Toyota 4-cylinder" PDFs on random sites. They always skip the high-pressure fuel system. The pump (driven off the exhaust camshaft) can

The fuel pump on the 1AZ-FSE is not in the gas tank; it is bolted to the cylinder head. It runs off the camshaft. A standard repair manual won't show you how to:

What the 1AZ-FSE manual must cover: Step-by-step high-pressure fuel pump removal, seal replacement (using Toyota special tool), and injector leakage tests. seal replacement (using Toyota special tool)