Unlike the single-cam YD25, the 4N15 is a DOHC (Dual Overhead Cam) engine.
On aluminum threads, use a thread chaser (not a tap) to clean. Helicoil is the only repair allowed per the manual. 4n15 engine service manual new
: Unlike many modern engines with hydraulic lifters, the 4N15 manual suggests inspecting valve clearance (audibly) every 30,000 km, though physical adjustment is rarely needed before 100,000 km. Cooling System : Use only Mitsubishi Genuine Super Long Life Coolant Unlike the single-cam YD25, the 4N15 is a