H4M engine: specifications and reviews

Renault owners are quite familiar with the H4M engine. The powertrain is the direct successor to Nissan's HR16DE. By and large - these are the same engines from different manufacturers. The motor was installed on vehicles manufactured by Renault and AvtoVAZ. The engine itself is originally from France, since it was developed by French engineers, but has taken root quite well in Japan.

Specifications

The H4M engine is a modified K4M powertrain. It was an evolutionary solution to a not-so-reliable and gluttonous powertrain. The designers of Renault were tasked with making an unpretentious motor that is ideal for any region of use, and it can also be installed on cars of different classes and purposes.

Unlike its predecessor, the gas distribution system uses a chain instead of a belt, but a significant drawback is the lack of hydraulic compensators. It is because of this that every owner must carry out valve adjustment every 80,000 km of run. A large adjustment interval is achieved due to the presence of pushers.

Changed and camshafts. Thanks to this, it became possible to install two nozzles on each cylinder. This significantly reduced consumption, increased environmental standards.

H4M engine - specifications:

Applicability

The H4M engine has gained high popularity and is installed on many cars. So, you can meet the power unit on vehicles: Nissan Micra, Lada X-Ray, Nissan Note, Nissan Bluebird Sylphy, Nissan Juke, Renault Logan and Renault Captur.

Service

Maintenance of the Renault powertrain is carried out by most motorists with their own hands. The simple construction and familiar design make it easy to do all the necessary repair operations with your own hands.

The service interval is 15,000 km. To increase the resource and extend the life of the motor, it is recommended to reduce the period to 12,000 km. The volume of motor lubricant in the power unit is 4.3 liters, but usually a 4-liter canister is enough to replace it. Recommended H4M engine oil is labeled 0W-30 to 15W-40. Nissan 5W-40 engine fluid is poured at the factory .

The oil filter is used by Nissan and has catalog numbers 152085758R and 15208-65F0A. Also, according to the original article numbers, you can pick up a sufficient number of analogues.

Maintenance Scheme:

1. TO-0. Conducted from 1500 to 2000 km. Regular factory oil is changing, and all filters are being changed.
2. TO-1. It is done after 12-15 thousand kilometers. Comprehensive maintenance of the entire power unit. From replacing consumables and oil to a complete diagnosis of the condition of the engine.
3. TO-2. Change of lubricant, oil and fuel filter elements. Scan for computer errors. Troubleshoot if necessary.
4. TO-3. In addition to standard operations, diagnostics of the brake system are added.

Subsequent maintenance is carried out by analogy TO1 - TO3. As practice shows, most motorists undergo maintenance at dealerships, only during the warranty period. After the warranty service expires, motorists begin the maintenance process on their own. This allows you to save up to 2/3 of the cash equivalent of the cost of operations in a car service.

Malfunctions

The automaker claims that the motor did not show any special flaws in the tests, but motorists have their own opinion on this. So, design flaws were found that are inherent in all H4M motors. Troubleshooters usually do motorists on their own. Consider the main ones, as well as solutions:

1. Vibration. It is quite clearly audible when starting the engine, as well as at idle. This means that the right engine mount must be replaced.
2. Roaring and angry sound. In this case, it is necessary to inspect the exhaust system. Often, such a sound begins to appear when the muffler rings burn out or if breakdowns are present.
3. The H4M engine stalls. The motor may stall for several reasons - sensor malfunctions, errors in the engine control unit, dirty throttle, or a problem in the ignition. The initial sign of this problem may be periodic tripling.
4. Whistle under the hood. Since there is no timing belt, the reason is the alternator belt, which is stretched and slips. Replacing the item will help solve the problem.

Tuning

The refinement of the H4M engine is divided into two types: chip tuning and turbine installation. Firmware for power will help add 5-10% of the main power, but it will proportionally increase fuel consumption. This should be considered when making a decision. Chip tuning can be done using the K-line cable, software and the availability of time. But, in most cases, it is recommended to contact a special car service, where specialists will select and configure the optimal configuration for the motor.

The second option is to install a turbine. The cheapest option is a VW turbine labeled K03. She comes with an intercooler and piping. In this case, it is necessary to redo (digest) the entire exhaust system and manifold. To save money, you can not change the connecting rod-piston group, but you can not inflate more than 0.5 bar. All this gives 150 hp, which is more than enough for urban and suburban operation.

If you want to increase power to 180-200 hp, you will have to replace the camshaft, install lightweight pistons and valves. In this case, the installation of a more powerful turbine and the firmware of the engine control unit with special software will not be complete.

But do not get too carried away by tuning and adding power. This can lead to the fact that the motor will reduce its resource by 1/3. Therefore, it is recommended to contact professionals who will make the calculations and select the best option for improvement.

H4M engine: reviews

Most motor owners were satisfied with the use of the power plant. The H4M engine was unpretentious in repair and maintenance. Most owners note that they carry out maintenance and repair operations on their own, without resorting to car service.

Conclusion

The Renault H4M engine of the joint production of Renault-Nissan is a high-quality power unit that has enhanced technical characteristics, efficiency and meets all standards. Maintenance is fairly simple and typical, every 15,000 km. But it is recommended to reduce the service interval to 12,000 km, which will increase the resource.