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Mitsubishi K4E K4F K4M engine (direct injection)
Knowledge base for the four-cylinder Mitsubishi K4 direct injection diesel engines: K4E (1415 cc), K4F (1490 cc), K4G and K4M (1995 cc). Water-cooled 4-cylinder DI engines used in, among others, Mitsubishi MT tractors, Iseki, Vetus, Weidemann, Hanix, Terex-Schaeff and numerous generator sets. Practical information on specifications, torque settings, maintenance, overhaul, cooling, fuel/injection, starting and troubleshooting, plus original and compatible parts.
06/07/2026
Buying a Mitsubishi K4 series? Discover the differences between K4E, K4F and K4M, direct vs indirect injection, and what to check before buying or overhauling.
06/07/2026
All specifications and torque settings of the Mitsubishi K4 (K4E, K4F, K4M): bore, displacement, valve clearance, head bolts and all torque values from the workshop manual.
06/07/2026
Maintenance of the Mitsubishi K4: engine oil, oil filter, fuel and air filter, valve clearance 0.25 mm, V-belt tension and injection timing — with all intervals.
06/07/2026
Overhauling the Mitsubishi K4: head gasket selection, head bolt torque and sequence, valve, crankshaft and connecting rod dimensions, and all torque values from the workshop manual.
06/07/2026
Mitsubishi K4 cooling: how the water pump, thermostat and radiator work and how to prevent overheating — with the diagnostic sequence from the workshop manual.
06/07/2026
Mitsubishi K4 fuel and injection: Bosch M-pump, nozzles (opening pressure 220 kg/cm²), bleeding the system, preheating times and the correct starting procedure.
06/07/2026
Mitsubishi K4 faults: hard starting, white/blue/black smoke, power loss, overheating, and low oil pressure — with known practical problems and solutions.
