Need expert advise before buy 1AD-FTV

[sherannet]

Hello Guys


Looking to buy a Corolla Diesel with 1AD-FTV, is that engine is a lemon?

regards
JC

[RS13]

Like any engine, get a good one with a good service history and you'll be away laughing. Get a cheap, mystery lemon and you'll pay for it.

The main Toyota's diesel for cars since mid-2000s. Installed in C/D-class (Corolla, Avensis), light-SUV (RAV4) and even some FR premium (Lexus IS).

The design of 3rd wave - "disposable" aluminium cylinder block with liners and "open deck", 4 valves per cylinder (DOHC with hydraulic lash adjusters), timing chain, VGT, balancing mechanism for 2.2. Fuel system - common-rail, injection pressure of 25-167 MPa (1AD-FTV), 25-180 (2AD-FTV), 35-200 MPa (2AD-FHV), forced versions have piezo injectors. Against the competitors AD performance can be called decent, but not outstanding.

High oil consumption and the resulting problems with widespread carbon depositions (from clogging intake and EGR to piston deposits and damage to the cylinder head gasket) - the warranty provides for the replacement of pistons, rings and all crankshaft bearings. Also: coolant leakage through the cylinder head gasket, water pump leakage, DPF regeneration system failures, destruction of the throttle actuator, oil leakage from the sump, injector amplifier (EDU) defect and injector defects, destruction of the high pressure supply pump components.