1.7 CRDi D4FD KIA-Hyundai Engine Problems And Reliability

Today’s article is devoted to a detailed review of the Hyundai Tussan and Kia Sportage diesel engine – D4FD 1.7 CRDi 16v with a power of 116/141 horsepower.

From the publication, you will find out how reliable, what technical features, characteristics, differences, design, service intervals, real fuel consumption, common sores, maximum resource, advantages and disadvantages, the South Korean turbodiesel is famous for.

With each, the popularity of Korean models of the Kia / Hyundai company is rapidly gaining momentum, not only in the US market, but throughout the planet.

The main reason for this popularity is that the engines of most South Korean cars are considered relatively reliable and inexpensive to maintain, especially diesel engines equipped with CRDi (Common Rail Direct) fuel equipment.

One of these engines can rightfully be attributed to the best of the modern medium-volume turbodiesel 1.7 CRDi of the D4FD series, the official presentation of which took place in the spring of 2010 at the Geneva International Motor Show, where it was presented as a standard Hyundai ix35 engine (aka Hyundai Tucson ) and KIA Sportage.

Diesel engine collection “ U I / U II Smartstream D ” includes the following series: D3FA 1.1 CRDi , D4FC 1.4 CRDi , D4FB 1.6 CRDi , D4FA 1.5 CRDi and D4FE 1.6 CRDi.

The turbocharged diesel engine considered in the article is the most voluminous and powerful representative of the “U” engine family, which entered the market as the latest in comparison with its counterparts in the line, which is why many auto specialists often conventionally refer it to the second, more modern generation of “U2” nodes.

It is worth saying that the 1.7 CRDi turbodiesel of the D4FD series was created by South Korean engineers from scratch, and it is completely different from previous engines developed on the Mitsubishi diesel platform. For reference, we note that today there are two main versions of the reviewed D4FD turbodiesel: “ LP ” for 116 horses and “ HP ” for 141 horses.

Main Characteristics And Specifics Of The Turbo Diesel D4fd 1.7 Crdi

Turbocharged four-cylinder diesel engine with a DOHS valve control mechanism ( 2 overhead camshafts and 16 lightweight valves are installed):

  • fuel equipment: Common Rail Direct;
  • type of injection: direct (fuel is supplied directly to the cylinders by electromagnetic nozzles);
  • motor range: ” U 1 / U 2 “;
  • factory marking: D4FD;
  • working volume: 1685 cubic centimeters (cylinder diameter – 77.2 millimeters, piston stroke – 90 millimeters);
  • output power: 116 / 141 horsepower (at 4,000 rpm), depending on the version of the node;
  • torque: 280 / 340 Newton per meter (at 2,750 / 2,500 rpm), depending on the modification of the internal combustion engine;
  • variable valve timing system: D-CVVT with two phase shifters (one on the intake shaft and one on the exhaust shaft).

Detailed reference information on the turbodiesel D4FD 1.7 CRDi 16 v 116 / 141 l. with :

  1. a cast-iron block with an in-line arrangement of R4 cylinders and a 16v aluminum head with a plastic valve cover (features: hydraulic compensators are installed, a high-performance turbine of the VGT series (blades have variable geometry), an exhaust gas recirculation system with an EGR valve, a standard DPF particulate filter; environmental Euro-5/6 standard);
  2. fuel equipment: Common Rail Direct (CRDi) from Bosch CP1 with direct injection (for reference: diesel fuel is supplied to the combustion chambers by CRI 2 electromagnetic nozzles at a high pressure of 1600 bar from a single high-pressure rail). The compression ratio of the injection pump CRDi is 17.3:1;
  3. type of camshaft drive: reinforced timing chain with a hydraulic tensioner (actual resource – 150 thousand kilometers to the first service; when jumping over a tooth or break – valve bending );
  4. fuel consumption, for example, a front-wheel drive crossover Kia Sportage 1.7 CRDi 141 hp in a QL body, equipped with a mechanical six-speed gearbox is 5.0 liters (in the city – 5.7 liters, on the highway – 4.5 liters) of diesel fuel per 100 kilometers;
  5. the amount of lubricant required for replacement is 5.0 liters (synthetic engine oil with tolerances – 5W30 / 5W40). The automaker Hyundai / Kia Motors Company recommends the use of Motul or Shell brand oil with appropriate approvals;
  6. approximate limiting resource of internal combustion engines: 300 thousand kilometers (local overhaul of nodes is allowed);
  7. country of assembly: South Korea, the main engine of the Kia / Hyundai car company, located in the suburbs of Busan.

Which Kia / Hyundai models ( body , generation and model years ) are equipped with D4FD 1.7 CRDi?

  1. Hyundai ix35 in the back of LM , second generation (years of production: from 2010 to 2015).
  2. Hyundai Tucson in the back of TL , third generation (years of production: from 2015 to 2020).
  3. Hyundai i40 in VF body , first generation (years of production: from 2011 to 2016).
  4. Kia Sportage in the back of SL , third generation (years of production: from 2010 to 2016).
  5. Kia Sportage in the back of QL , fourth generation (years of production: from 2016 to 2021).
  6. Kia Carens in the back of RP , third generation (years of production: from 2013 to 2020).
  7. Kia Optima in the back of TF , third generation (years of production: from 2010 to 2016).

Pros & Cons of a turbodiesel engine 1.7 CRDi D4FD

  • A fairly powerful, resourceful, high-torque and durable medium-volume turbodiesel, which often goes to the capital for more than 300 thousand kilometers.

  • Up to 150 thousand kilometers, the engine in question very rarely worries the car owner, and if it does, then over trifles that are easily and quickly eliminated with their own hands.

  • Not afraid of negative temperatures, provided that the car owner fills in winter diesel fuel.

  • Very low fuel consumption compared to similar mid-range diesel powertrains.

  • Operation, maintenance and repair of the engine is quite cheap for car owners, and this engine rarely breaks down seriously.

  • The overall reliability of the reviewed diesel engine is at a high level.

  • Electromagnetic fuel injectors are extremely sensitive to the quality of the diesel fuel being poured.

  • It is difficult to find some parts for sale, which is caused by the rather low prevalence of the monitored series of turbo engines in the markets of Russia and Belarus.

  • If this fairly reliable diesel engine does break down, then not every service station will undertake its repair.

  • Very noisy gas distribution chain, which rattles, both at idle and at high speeds in motion.

  • You can not immediately get under way without preheating, especially at low temperatures outside.

  • After 150 thousand kilometers, car owners have to clean the intake manifold very often and on a systematic basis.

The most common Problems of a diesel engine 1.7 CRDi D4FD series

  1. Extraneous noise from the timing chain. The appearance of noise from the timing chain is one of the most common sores in the monitored turbodiesel. As a rule, a similar problem occurs almost immediately after 140-150 thousand kilometers, and it is almost impossible to avoid it. We note right away that this sore is not critical and is easily eliminated by standard adjustment of the tension roller;
  2. Frequent clogging of the intake manifold. The next most common problem of the monitored turbo engine is the accelerated clogging of the intake manifold, which occurs immediately after 150 thousand kilometers, due to the very sensitive CRDi fuel equipment to refueling diesel fuel. The main symptoms of the sore are the appearance of increased consumption of diesel fuel, turbojam and smoke. In addition, the engine can “think” for a long time during acceleration, an extraneous clatter can be heard, for example, detonation, as in a gasoline engine, and the speed does not pick up above 2,000. The problem is quickly eliminated with the help of special auto chemistry and partial disassembly of high-pressure fuel pump components;
  3. Frequent lubricant leaks. As a rule, the reviewed engine is famous for frequent leaks of engine oil, which loves to ooze from under the valve cover. According to auto mechanics, the main problem lies in the unfinished gasket, which official dealers change along with the plastic cover under warranty, but such a replacement does not help for a long time, the leaks return again;
  4. Excessive oil consumption. According to the reviews of car owners, there are also very unpleasant breakdowns with the turbo engine in question, which in most cases appear on long runs (after 200 thousand kilometers) and they are associated with the “horse” oil burner. If the lubricant consumption exceeds 900 grams per thousand kilometers, then there is a high probability of breakdown of the cylinder head gasket, due to which the antifreeze slowly enters the oil;
  5. Trouble and vibration. Often tripling, vibration and twitching at idle in the engine under review can occur due to heavily worn fuel injectors. Low-quality diesel fuel often leads to rapid wear of electromagnetic injectors. In the early stages, this problem is solved by cleaning the nozzles with special auto chemicals, and in the later stages, by replacing the components of the high-pressure fuel pump;
  6. Loss of traction. If the thrust of a turbodiesel has decreased, then in most cases, the main culprit of the problem is a heavily clogged pre-filter located directly in the fuel tank. This trouble is easily resolved by replacing the filter component;
  7. Errors in turbocharging. According to car owners, turbocharging errors can occur at any mileage. Often the problem lies in the integrity of the turbine pressure sensor and is solved by replacing it.

As a result, we add that the manufacturer, the South Korean concern Hyundai / Kia Motors, declares the minimum resource of its 1.7 CRDi turbodiesel of the D4FD series, installed on the mid-size models of the Hyundai Tucson and Kia Sportage crossovers, which is about 250-270 thousand kilometers before the first significant breakdowns occur, depending on the observance by the car owner of the technical regulations of the manufacturer for the operation / maintenance of the engine.

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