Kia Optima 4 JF

Reason: tendency to premature ignition of the mixture (LSPI) at low speeds at high load, sensitivity to fuel quality and soot in combustion chambers. This is due to the use of low-quality fuel. It was met after 50,000 – 100,000 km.

Detonation leading to the destruction of pistons

Reason: tendency to premature ignition of the mixture (LSPI) at low speeds at high load, sensitivity to fuel quality and soot in combustion chambers. This is due to the use of low-quality fuel. It was met after 50,000 – 100,000 km. Removal cost: 150 000 – 450 000 rubles (major repair of the engine with the installation of a reinforced piston group). # # Nagar on the intake valves

Symptoms: unstable engine operation, ignition skips, power drop. The reason: features of direct fuel injection (valves are not washed with fuel), accumulation of sediments (compared with fuel quality and inflated service intervals). It was found after 60,000 – 120,000 km. Removal cost: 50 000 – 80 000 rubles. # # Catalytic converter

The reason: the destruction of the catalyst with the ceramic particles entering the cylinders, which leads to bullies on the walls of the cylinders (oil consumption increases, noise appears when working, especially on a cold engine). Met after 100,000 - 150,000 km. Removal cost: 150 000 – 450 000 rubles (includes major repair of the engine (spreading, sleeve) with replacement of the catalyst and related parts, turbine bulkhead). # # Turbocharger

Symptoms: whistling, grinding, power drop, increased oil consumption. Reason: jamming or wear of the Westgate actuator (electronic pressure relief valve), less often - coking the oil supply tube to the turbine. Natural wear of bearings and seals of the turbocharger. It was met after 100,000 – 180,000 km. Removal cost: 90,000 - 150,000 rubles. ## Increased oil consumption

Reason: wear of oil removable rings and cylinder walls, aging of seals due to high temperatures and boost pressure; constructive tendency of aluminum block with open cooling shirt to appearance of ellipse of shells. Wear of oil caps and valve guides. Met after 100,000 - 180,000 km. Cost of elimination: 160,000 – 300,000 rubles. # # Stretching of the chain of the HRM

Reason: wear of the chain and tensioner, insufficient lubrication in conditions of high loads. It was met after 100,000 – 180,000 km. Cost of elimination: 75 000 - 120 000 rubles. # # Bullies in cylinders

The reason: design features of the lubrication and cooling system, the use of poor-quality oil and fuel, the destruction of the catalyst with the subsequent ingress of ceramic dust into the cylinders. It is also associated with a defect of the oil pump combined with the balancing shaft block, which leads to a drop in oil pressure. It was found after 60,000 – 120,000 km. Removal cost: 280,000 – 450,000 rubles (capital repair or replacement of the short block). # # Increased oil consumption

The reason: the occurrence of thin oil-removable rings and wear of the cylinder-piston group (CPG). It was found after 80,000 – 120,000 km. Removal cost: 200 000 – 300 000 rubles (major repairs, replacement of piston group). # # Turbocharger

The reason: natural wear, insufficient cooling of the turbine after long operation, low-quality oil. Met after 100,000 - 150,000 km. Removal cost: from 20 000 rubles (replacement of the turbine cartridge). # # Bullies on the walls of cylinders and pistons

The reason: local overheating of pistons skirts, hitting crumbs of the destroyed catalyst in the cylinders, insufficient cooling of the CNG due to the lack of oil nozzles in early versions; reduced efficiency of the oil pump. It was found after 80,000-150,000 km. Cost of elimination: 140 000 - 350 000 rubles (capital repairs with a sleeve unit and installation of oil injectors). # # Nagar on intake valves

Reason: Direct fuel injection design, in which gasoline does not wash the intake valves. It was seen after 60,000 to 100,000 km. Cost of elimination: 15 000 - 30 000 rubles (cleaning of the intake tract). # # # TNVD

Cause: destruction or wear of the membrane of the high pressure fuel pump. It leads to the ingress of fuel into the oil, to an increase in the level of oil and accelerated wear of engine parts. It was found after 60,000 – 120,000 km. Removal cost: 45 000 – 80 000 rubles (replacement of TNVD in the collection). # # # Stretching of the valve timing drive chain

Reason: low wear resistance of the original chain of the gas distribution mechanism. Met after 100,000 - 150,000 km. Removal cost: 30 000 - 50 000 rubles (replacement of the set of the chain of the HRM). # # # Bullies in the cylinders of the engine

The reason: the design features of the piston group, degradation and destruction of the catalyst, the particles of which are sucked into the cylinders. Insufficient efficiency of oil nozzles cooling pistons. It was found after 60,000-150,000 km. Removal cost: 280,000 – 450,000 rubles (capital repairs with a socket or replacement of a short unit). # # # Destruction of a catalytic converter

The reason: natural wear, use of poor-quality fuel, ignition failures, ingress of unburned fuel. A destroyed catalyst is one of the main causes of bullies in cylinders. It was found after 80,000-150,000 km. Removal cost: 30 000 – 80 000 rubles (removal of the catalyst, installation of the flame arrester and firmware ECU). # # Increased consumption of motor oil (oil slug)

Reason: occurrence of piston rings and wear of oil-removable rings, coking due to the quality of fuel and oil. It was found after 90,000 to 130,000 km. Removal cost: from 150 000 rubles (replacement of piston rings, decoking). # # Wear of rod liners

Reason: insufficient lubrication, accelerated wear of the antifriction layer of the liners leads to the twisting of the rod liners and jamming of the crankshaft. It was met after 100,000 – 150,000 km. Removal cost: 220,000 – 450,000 rubles (major repairs with replacement or grinding of the crankshaft, replacement of the short block or alteration to the oil pump from G4KD). ## Failure of the urea system (SCR) or NOx sensors

Cause: malfunction of the urea system (SCR) or NOx sensors. Crystallization of urea on the injector, failure of the NOx sensor or breakage of the heating element in the tank with AdBlue at negative temperatures. Disabling environmental systems on this engine is difficult due to the features of the firmware ECU. It was met after 50,000 to 90,000 km. Removal cost: 20,000 - 70,000 rubles (replacement of the AdBlue nozzle, repair of the tank heater or software shutdown of the SCR system). # # # Particulate filter malfunction (DPF)

Reason: melting or clogging of the particulate filter due to short trips, use of poor-quality fuel or oil, failure of the particulate sensor. It was seen after 70,000 to 180,000 km. Removal cost: 15 000 – 60 000 rubles (professional chemical cleaning / filter washing or its software and physical removal), original – 130 000 – 150 000 rubles. # # Faulty valve EGR

Reason: intensive deposition of soot and oil soot on the valve elements and in the cooling radiator of the EGR system. Range: 80,000 - 160,000 km. Cost of elimination: 60 000 - 110 000 rubles. # # Fuel injectors

Symptoms: loss of traction, unstable engine operation, errors in the fuel system, black smoke. Reason: clogging and wear of the nozzles of the Common Rail system due to fuel quality, violation of the leakage of the sprayer, a drop in pressure in the ramp. It was met after 100,000-200,000 km. Removal cost: 90 000 – 140 000 rubles (repair and adjustment of nozzles on the stand or partial replacement of components). # # Turbocharger

Reason: wear of bearings and actuator, insufficient lubrication, pollution of oil channels, oil starvation with untimely change of oil, entry of abrasive particles through the damaged airway. Met after 150,000 - 250,000 km. Removal cost: 30,000 - 120,000 rubles. # # EGR valve jamming

Symptoms: increased exhaust smoke, increased fuel consumption. The reason: the abundant accumulation of soot and carbon deposits on the valve rod due to the urban driving mode and the poor quality of diesel fuel. It was found after 80,000 – 160,000 km. Removal cost: 65 000 - 120 000 rubles (cleaning and washing the unit or replacing the EGR valve with a new one). # # #

Symptoms: frequent regeneration of the particulate filter (DPF), frequent transition of the motor to emergency mode. The reason: the design features of the system, the frequency of regeneration can reach every 100 km. Pressure sensor malfunction. It was found after 80,000-180,000 km. Cost of elimination: 65,000 - 120,000 rubles. # # Fuel injectors

Symptoms: loss of traction, unstable engine operation, errors in the fuel system. Reason: wear of nozzles, violation of the leakproofness of the sprayer, a drop in pressure in the fuel ramp due to the quality of the fuel. It was met after 100,000 – 160,000 km. Cost of elimination: 95 000 – 150 000 rubles. # # Stretching of the valve timing drive chain

The reason: wear of the chain, tensioner and sedators, deterioration of lubrication during cold starts. It was met after 120,000-200,000 km. Cost of elimination: 90 000 – 140 000 rubles. # # Destruction of the pulley damper of the crankshaft

The reason: fatigue damage and stratification of the rubber insert of the damper from temperature changes, high loads and aging of the material. Met after 150,000 - 200,000 km. Removal cost: 15,000 - 30,000 rubles (replacement of the crankshaft pulley). ## Difficult on/crack of the first and rear gear

Reason: premature wear of plastic sleeves of the backstage of the gearshift lever, stretching of gearshift transmission cables or wear of synchronizer locking rings. It was met after 100,000 - 150,000 km. Elimination cost: 15,000 - 40,000 rubles (replacement of cables / backstage reset or bulkhead of the box with replacement of synchronizers). ## Failure of the inhibitor switch (selector position sensor)

Symptoms: the transition of the transmission to emergency mode (fixed 3rd gear), the loss of the indication of the selected mode on the instrument panel, the inability to start and jerk. Cause: failure of the inhibitor sensor (transmission selector). It was met after 50,000 to 90,000 km. Removal cost: 12 000 - 30 000 rubles (replacement of the sensor of the position of the selector). # # Wear of friction disks

Symptoms: jerks and tremors during gear shifts. The reason: wear of friction disks, degradation of the transmission fluid, malfunctions in the hydroblock. It was met after 100,000 – 140,000 km. Cost of elimination: 120 000 – 180 000 rubles. # # Wear of the hydroblock (solenoids)

Symptoms: slippage, delay in activating mode D, push and jerk when changing gears, especially on a cold box. The reason: wear of the hydroblock during aggressive operation and untimely change of oil in the automatic transmission. Falling oil pressure in the circuit, wear of solenoids, pollution of the valves of the hydroblock by the products of friction wear; insufficient efficiency of the heat exchanger. It was found after 120,000-200,000 km. Elimination cost: 80 000 – 220 000 rubles (repair of the hydroblock with the replacement of solenoids). # # # Fuzzy switching and noise when switching

Reason: clutch/mechatronic wear and under-adaptation/maintenance. It was met after 50,000 – 120,000 km. Removal cost: 40 000 – 250 000 rubles (clutch replacement, mechatronic repair or box bulkhead). # # Vibrations and jerks when moving, transmission errors

Reason: overheating of the clutch during prolonged movement in congestion, wear of the clutch packs, wear of the actuator (clutch activator), incorrect operation of the DCT control unit. It was found after 80,000 – 120,000 km. Removal cost: 170 000 – 250 000 rubles (replacement of the double clutch set, replacement of forks and subsequent software adaptation of actuators). # #

It was found after 80,000 to 120,000 km. Cost of elimination: 8 000 - 20 000 rubles. # Depreciation of the silent blocks of the front levers

It was found after 80,000 – 120,000 km. Cost of elimination: 18 000 – 30 000 rubles. # Wear of silentblocks of rear multilink suspension

It was found after 60,000-150,000 km. The cost of elimination: 15 000 - 40 000 rubles.

Detonation leading to the destruction of pistons

• Removal cost: 150 000 – 450 000 rubles (major repair of the engine with the installation of a reinforced piston group).

Catalytic converter

• Removal cost: 150 000 – 450 000 rubles (includes major repairs of the engine (spreading, sleeve) with replacement of the catalyst and related parts, turbine bulkhead).

Turbocharger

• Reason: jamming or wear of the Westgate actuator (electronic pressure relief valve), less often - coking the oil supply tube to the turbine.
• Natural wear of bearings and seals of the turbocharger. It was met after 100,000 – 180,000 km.

Increased oil consumption

• Reason: wear of oil removable rings and cylinder walls, aging of seals due to high temperatures and boost pressure; constructive tendency of aluminum block with open cooling shirt to appearance of ellipse of shells.
• Wear of oil caps and valve guides. Met after 100,000 - 180,000 km.

Stretching the timing system chain

• Reason: wear of the chain and tensioner, insufficient lubrication in conditions of high loads. It was met after 100,000 – 180,000 km.

Bullies in cylinders.

• Removal cost: 280,000 – 450,000 rubles (capital repair or replacement of the short block).

Increased oil consumption

• The reason: the occurrence of thin oil-removable rings and wear of the cylinder-piston group (CPG). It was found after 80,000 – 120,000 km.
• Removal cost: 200 000 – 300 000 rubles (capital repairs, replacement of piston group).

Turbocharger

• The reason: natural wear, insufficient cooling of the turbine after long operation, low-quality oil. Met after 100,000 - 150,000 km.
• Removal cost: from 20 000 rubles (replacement of the turbine cartridge).

Bullying on cylinder walls and pistons

• The cost of elimination: 140 000 - 350 000 rubles (capital repairs with a sleeve unit and the installation of oil injectors).

TNVD

• Cause: destruction or wear of the membrane of the high pressure fuel pump.
• It leads to the ingress of fuel into the oil, to an increase in the level of oil and accelerated wear of engine parts. It was found after 60,000 – 120,000 km.
• The cost of elimination: 45 000 – 80 000 rubles (replacement of TNVD in the collection).

Stretching the timing system drive chain

• Reason: low wear resistance of the original chain of the gas distribution mechanism. Met after 100,000 - 150,000 km.
• The cost of elimination: 30 000 - 50 000 rubles (replacement of the set of the chain of the HRM).

Bullying in engine cylinders

• The cost of elimination: 280 000 – 450 000 rubles (capital repairs with a sleeve or replacement of a short block).

Destruction of the catalytic converter

• The reason: natural wear, use of poor-quality fuel, ignition failures, ingress of unburned fuel.

Increased consumption of motor oil (oil)

• Reason: occurrence of piston rings and wear of oil-removable rings, coking due to the quality of fuel and oil. It was found after 90,000 to 130,000 km.
• Removal cost: from 150 000 rubles (replacement of piston rings, decoxing).

Wear of rod liners

• Reason: insufficient lubrication, accelerated wear of the antifriction layer of the liners leads to the twisting of the rod liners and jamming of the crankshaft. It was met after 100,000 – 150,000 km.
• Removal cost: 220 000 – 450,000 rubles (capital repairs with replacement or grinding of the crankshaft, replacement of the short block or reworking on the oil pump from G4KD).

Failure of the urea system (SCR) or NOx sensors

• Cause: malfunction of the urea system (SCR) or NOx sensors.
• Removal cost: 20 000 – 70 000 rubles (replacement of the AdBlue nozzle, repair of the tank heater or software shutdown of the SCR system).

Particulate filter failure (DPF)

• Reason: melting or clogging of the particulate filter due to short trips, use of poor-quality fuel or oil, failure of the particulate sensor. It was seen after 70,000 to 180,000 km.

Fuel injectors

• Symptoms: loss of traction, unstable engine operation, errors in the fuel system, black smoke.
• Reason: clogging and wear of the nozzles of the Common Rail system due to fuel quality, violation of the leakage of the sprayer, a drop in pressure in the ramp. It was met after 100,000-200,000 km.
• Removal cost: 90 000 – 140 000 rubles (repair and adjustment of nozzles on the stand or partial replacement of components).

Turbocharger

• Reason: wear of bearings and actuator, insufficient lubrication, pollution of oil channels, oil starvation with untimely change of oil, entry of abrasive particles through the damaged airway. Met after 150,000 - 250,000 km.

EGR valve jamming

• Removal cost: 65 000 – 120 000 rubles (cleaning and washing the unit or replacing the EGR valve with a new one).

Soot filter

• The reason: the design features of the system, the frequency of regeneration can reach every 100 km. Pressure sensor malfunction. It was found after 80,000-180,000 km.

Fuel injectors

• Symptoms: loss of traction, unstable engine operation, errors in the fuel system.
• Reason: wear of nozzles, violation of the leakproofness of the sprayer, a drop in pressure in the fuel ramp due to the quality of the fuel. It was met after 100,000 – 160,000 km.

Stretching the timing system drive chain

• The reason: wear of the chain, tensioner and sedators, deterioration of lubrication during cold starts. It was met after 120,000-200,000 km.

Breakdown of the pulley damper of the crankshaft

• Cost of elimination: 15 000 - 30 000 rubles (replacement of the pulley crankshaft).

Difficulty on/crunch of first and rear gear

• Reason: premature wear of plastic sleeves of the backstage of the gearshift lever, stretching of gearshift transmission cables or wear of synchronizer locking rings. It was met after 100,000 - 150,000 km.
• Removal cost: 15,000-40,000 rubles (replacement of cables / backstage repackage or bulkhead of the box with replacement of synchronizers).

Failure of the inhibitor switch (selector position sensor)

• The cost of elimination: 12 000 - 30 000 rubles (replacement of the sensor of the position of the selector).

Wear of friction discs

• The reason: wear of friction disks, degradation of the transmission fluid, malfunctions in the hydroblock. It was met after 100,000 – 140,000 km.

Wear of the hydroblock (solenoids)

• The reason: wear of the hydroblock during aggressive operation and untimely change of oil in the automatic transmission.
• Falling oil pressure in the circuit, wear of solenoids, pollution of the valves of the hydroblock by the products of friction wear; insufficient efficiency of the heat exchanger. It was found after 120,000-200,000 km.
• The cost of elimination: 80 000 – 220 000 rubles (repair of the hydroblock with the replacement of solenoids).

Fuzzy switching and switching noise

• Reason: clutch/mechatronic wear and under-adaptation/maintenance. It was met after 50,000 – 120,000 km.
• The cost of elimination: 40 000 – 250 000 rubles (clutch replacement, repair of a mechatronic or bulkhead of a box).

Vibrations and jerks when touching, transmission errors

• Reason: overheating of the clutch during prolonged movement in congestion, wear of the clutch packs, wear of the actuator (clutch activator), incorrect operation of the DCT control unit. It was found after 80,000 – 120,000 km.
• Removal cost: 170 000 – 250 000 rubles (replacement of the double clutch set, replacement of forks and subsequent software adaptation of actuators).

Front shock absorbers and bearings

• Removal cost: 6 000 – 30 000 rubles (replacement of shock absorber and support in the collection, work).

Steering rack

• Reason: wear of the steering rack, the production of gear teeth, the flow of reiki coils. It was met after 100,000 – 140,000 km.

Chops, detachment of paint layers and the appearance of foci of corrosion on the roof above the windshield

• Removal cost: 15 000 – 30 000 rubles (cleaning of rust, priming and local color of the front of the roof with the application of protective armor film).

Clouding, yellowing and appearance of microcracks on the polycarbonate of the front headlights

• Reason: use of soft factory lacquer coating, subject to abrasive wear from sand and ultraviolet aging. It was found after 80,000 to 120,000 km.

Unintentional shutdown of multimedia system, freeze or restart

• Removal cost: 15 000 – 40 000 rubles (software update, component repair with soldering or replacement of board).

Parking sensors

• Removal cost: 12 000 – 30 000 rubles (replacement of the failed ultrasonic sensor or restoration of the damaged harness wiring).

Generator

• Symptoms: lack of charge of the battery, burning indicator of malfunction of the generator on the dashboard.
• Reason: wear of the brush unit, failure of the voltage regulator or diode bridge. Met after 100,000 - 160,000 km.

Climate system shutters

• Reason: failure of servo drives of valves, wear of gears of gears of gear reducer, oxidation of contacts of connectors. It was found after 70,000 – 110,000 km.

Electrical Regulatory Valve (ECV) of the Compressor

• Reason: failure of the control electromagnetic valve of the air conditioner compressor due to wear or clogging with the wear products of the system. It was seen after 70,000 to 120,000 km.
• Removal cost: 8 000 – 20 000 rubles (replacement of the regulating valve, refueling of the system with a refrigerant and oil replacement).

Refrigerant leakage

• The reason: loss of tightness of connections of the air conditioning system through rubber seals due to vibrations and temperature changes.
• Corrosion and mechanical damage to thin aluminum tubes of the air conditioner radiator (condenser) due to the ingress of road reagents, dirt and small stones through the bumper grille. It was found after 80,000 – 120,000 km.
• Cost of elimination: diagnostics of tightness of the system - 2 000 rubles; refueling of the air conditioner - 4 000 rubles; 18 000 - 40 000 rubles (replacement of tubes / radiator of the air conditioner with a new analogue, vacuuming and full filling with freon).

Extraneous noise (hum, whistle) when the air conditioner compressor works

• Reason: wear of the bearing or burnout of the winding of the electromagnetic compressor clutch, pulley production, foreign particles entering the circuit. It was found after 90,000 – 160,000 km.

Shows, bargaining and re-registration take time: buyers look, promise to think and disappear. Fair price after inspection closes the auction on the spot. If money is needed urgently, the purchase takes away waiting and repeat displays.

Leave a request with the car data. We will discuss the preliminary assessment and inspection. After checking the status and documents, we agree on the final price and terms of the transaction.