2GR-FE/FSE/FKS Engine Problems and Reliability. Toyota conducted a recall campaign for cars with 2GR-FE and 2GR-FSE produced until 2010. The reason for that became a problem with an oil leak from the rubber hose which feeds the VVT-i lubrication system. The manufacturer replaced that rubber part by a metal pipe. Toyota 4.0 1GR-FE Engine Problems and Malfunctions. The first, pre-styled engine with a single VVTi had no problem of widespread oil leakage through the oil lines at all. However, on a car engine with a fairly high mileage, if overheating occurs, sometimes damage to the cylinder head gasket occurs. Torque (lb-ft) 265-280 TQ. Again, the 2GR-FKS is a 3.5L V6 engine based on the design of the older 2GR-FSE. The 2GR engine series is an evolution from the previous 1GR engine series that preceded it and shares some important design elements with the earlier engine. It uses an aluminum design to keep weight down. Sounds to me something to do with the cams. maybe the timing of the engine is out of whack and the internals are whacking each other which hopefully it isn't. Im no expert so I wouldn't fully think this is the issue just an assumption with issues with Dual vvti. The timing chain, chain tensioners, rocker arms, valve springs, vvti cams gears, etc K12N PETROL ENGINE • Advanced Dual Jet engine with Dual VVT (Variable Valve Timing) technology • First-in-segment idle start-stop (ISS) function • Dual-Injector • Best in Class Fuel efficiency of 23.56 km/l* (Manual Transmission) and 24.43 km/l* (Auto Gear Shift) in WagonR 1.2L Available in: Swift, Baleno, WagonR (1.2L) & Fronx Ep8pQt.

dual vvti engine problems