Toyota 3MZ-FE 3.3L Engine Specs, Problems, Reliability. In 2002, Toyota introduced a new member of the MZ series – the 3MZ-FE. It was a 3.3-liter V6 gasoline engine, which became an alternative to Toyota’s late 3.0 L 1MZ with VVT-i. Both engines have the same architecture and style functions. The 3MZ varies mainly by its 3.3-liter capacity and 10.8:1 compression ratio. The engine was offered for the Toyota Highlander (and Hybrid version), Toyota Camry, Solara, Lexus RX 330/400h, ES 330, and others.
Like the 1MZ, the Toyota 3.3 L V6 engine has an aluminum cylinder block with a 60-degree angle in between cylinder banks. It has the press-fitted cast-iron cylinder liners too. The 3MZ-FE was equipped with a forged steel crankshaft with four primary journals, forged connecting rods, and aluminum alloy pistons with a resin coating on the piston skirts for friction reduction. The engine kept the 83.0 mm stroke, but it has actually increased bore size in order to attain its 3.3-liter displacement.
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Toyota 3MZ-FE 3.3L Engine Specs, Problems, Reliability
The 3MZ engine has aluminum cylinder heads with 4 valves per cylinders and belt-driven double overhead camshafts. The engine uses a timing belt to drive the exhaust camshafts just and those, in turn, rotate the intake camshafts through gears. Toyota’s 3.3 L MZ engines were constantly produced with the Variable Valve Timing – intelligence (VVT-i) on the intake side. Hydraulic lifters for the consumption and exhaust valves are not offered. Valve clearance needs checking and adjustment every 60-80k miles (100,000-150,000 km).
The 3MZ-FE got sequential multi-point fuel injection system, which utilizes 12-hole fuel injectors. The intake manifold is made from plastic, compared to aluminum alloy for the 1MZ. The intake includes Toyota’s Acoustic Control Induction System (ACIS) – it varies in two phases the effective length of the consumption manifold according to engine speed. In addition to ACIS, the air cleaner consumption is divided into two locations controlled by a two-stage air intake control system. This V6 engine also got the second-generation linkless electronic throttle (ETCS-i) and Direct Ignition System (DIS), where each coil fitted over a spark plug. The exhaust system consists of stainless-steel exhaust manifolds and no EGR.
The production of the 3MZ-FE was ceased in 2015. At this point, it was currently changed by a brand-new 3.5-liter V6 engine out from the GR series – 2GR-FE.
Toyota 3MZ-FE 3.3L Engine Problems and Reliability
The engine is no longer brand-new and almost all have a great deal of wear. A normal high-mileage 3MZ-FE engine typically has actually increased oil consumption, and brand-new ones are no longer produced. A broken cylinder block is not rebuildable and requires a full replacement while finding a used 3MZ engine in the appropriate condition is not so basic.
With a broken timing belt, the 3MZ engine flexes valves causing serious damages to cylinder heads and pistons. It is scared of overheating and is very vulnerable to the development of sludge on within walls, as well as carbon deposits inside intake ports. VVT-i actuator valve is not very resilient. Problems with the VVT-i system are shown in rough engine operation and twitching velocity.
However there are positive moments too. New knock sensors finally fixed the problem with their failures, which typically happened with the 1MZ-FE engine. With regular usage and prompt upkeep, the engine has enough longevity that not unusual surpasses 200k mileage (300,000 km), which is not bad at all.
Toyota 3MZ-FE 3.3L Engine Specs
Toyota Motor Manufacturing Kentucky
|Cylinder block material
|Cylinder head material
|Multi-point fuel injection
|Number of cylinders
|Valves per cylinder
|92.0 mm (3.92 in)
|83.0 mm (3.27 in)
|3,310 cc (201.9 cu in)
|Type of internal combustion engine
|Four-stroke, naturally aspirated
|225-250 hp (168-186 kW)/5,200
|Torque, lb ft
|240-258 lb-ft (325-350 Nm)/4,000
|Engine oil weight
|Engine oil capacity, liter
|4.7 l (5.0 qt)
0.2 l (0.21 qt) – oil filter
|Oil change interval, mile
|6,000 (10,000 km)/6 months
|Toyota Camry, Toyota Highlander, Toyota Camry Solara, Toyota Sienna, Toyota Highlander Hybrid, Lexus RX 330, Lexus RX 400h, Lexus ES 330, Mitsuoka Orochi