Renault owners are pretty familiar with the H4M engine. The power unit is a 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 comes from France, as it was developed by French engineers, but it has taken root quite well in Japan.
Features
The H4M engine is a modified K4M power unit. It was an evolutionary solution to a not entirely reliable and voracious power unit. Renault designers were tasked with making an unpretentious engine that is ideal for any region of use, and can also be installed on cars of various classes and purposes.
Unlike its predecessor, the gas distribution system uses a chain instead of a belt, but a significant flaw is the lack of hydraulic lifters. It is because of this that every owner must adjust the valves every 80,000 km. A large adjustment range is achieved due to the presencepushers.
Camshafts have also been changed. Thanks to this, it became possible to install two nozzles for each cylinder. This has significantly reduced consumption, increased the environmental standard.
H4M engine - specifications:
| Description | Characteristic |
| Manufacturer | Yokohama Plant Dongfeng Motor Company AvtoVAZ |
| Marking | Engine h4m hr16de |
| Release | 2006-2017 |
| Configuration | L4 |
| Number of cylinders | 4 |
| Timing mechanism | 16-valve (4 valves per cylinder) |
| Engine size | 1.6 liters (1598 cc) |
| Piston diameter | 78mm |
| Power characteristics | 108 to 117 hp |
| Econorma | Euro 4/5 |
| Average consumption | 6.4 liters per 100 km |
| Resource | 250 according to manufacturer |
Applicability
The H4M engine has received 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.
Maintenance
Maintenance of the Renault power unit is carried out by most motorists with their own hands. The simple construction and familiar design make it easy to do all the necessary repairs yourself.
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 can is enough to replace. The recommended H4M engine oil is marked 0W-30 to 15W-40. Nissan 5W-40 engine fluid is filled at the factory.
The oil filter is used by Nissan and has part numbers 152085758R and 15208-65F0A. Also, according to the original articles, you can pick up a sufficient number of analogues.
Maintenance Chart:
- TO-0. It is carried out from 1500 to 2000 km of run. Regular factory oil is being changed, all filters are also being changed.
- TO-1. It is done after 12-15 thousand kilometers. Comprehensive service for the entire power unit. From replacing consumables and oil to a complete diagnosis of the condition of the engine.
- TO-2. Replacement of lubricating fluid, oil and fuel filter elements. Scan for ECU errors. Troubleshoot as needed.
- TO-3. In addition to standard operations, brake system diagnostics are added.
Subsequent maintenance is carried out by analogy with TO1 - TO3. As practice shows, most motorists undergo maintenance at dealer stations, only during the warranty period. At the end of the warranty service, 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.
Faults
The automaker claims that the engine did not show any particular shortcomings during testing, but motorists have their own opinion on this matter. So, design flaws were found that are inherent in all H4M motors. Troubleshooting is usually done by motorists on their own. Consider the main ones, as well as ways to eliminate them:
- Vibration. It is quite clearly audible when starting the engine, as well as at idle. This means that the right motor mount needs to be replaced.
- Roar and angry sound. In this case, it is necessary to inspect the exhaust system. Often, such a sound begins to appear when the silencer rings burn out or there are breakdowns.
- H4M engine stalls. The engine can stall for several reasons - sensor malfunctions, errors in the engine control unit, a dirty throttle, or a problem in the ignition. The initial symptom of this problem may be intermittent tripping.
- Whistling under the hood. Because there is no beltTiming, then the reason is the alternator belt, which is stretched and slips. Replacing the element will help solve the problem.
Tuning
H4M engine modification is divided into two types: chip tuning and turbine installation. Firmware for power will help add 5-10% of the main power, but at the same time proportionally increase fuel consumption. This should be taken into account when making a decision. Chip tuning can be done with the help of a 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 set up the optimal configuration for the motor.
The second option is to install a turbine. The cheapest option is a turbine from VW marked K03. She comes with an intercooler and piping. In this case, it is necessary to redo (digest) the complete exhaust system and manifold. To save money, you can not change the connecting rod and piston group, but at the same time you cannot 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 the power to 180-200 hp, you will have to replace the camshaft, install lightweight pistons and valves. In this case, it will not do without installing a more powerful turbine and flashing the engine control unit with special software.
But don't get too carried away with 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 contactprofessionals who will make 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 turned out to be unpretentious in repair and maintenance. Most owners note that they carry out maintenance and restoration and repair operations on their own, without resorting to the help of a car service.
Conclusion
The Renault H4M engine co-produced by Renault-Nissan is a high-quality power unit that has improved technical characteristics, efficiency and meets all standards. Maintenance is quite 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.
