This comprehensive service repair manual provides a complete guide for the Nissan L20A and L24 series model engines. It covers everything from basic maintenance and tune-up procedures to complex engine repairs and troubleshooting. Detailed step-by-step instructions, accompanied by clear illustrations, exploded diagrams, drawings, and photos, guide you through every repair procedure.

The manual offers a wealth of information, including:

* **Engine General:** Understanding engine components and their functions.
* **Engine Tune-Up:** Procedures for optimizing engine performance.
* **Engine Mechanical:** Detailed instructions for disassembling, servicing, and reassembling engine components.
* **Engine Lubrication System:** Maintenance and repair of the lubrication system.
* **Cooling System:** Procedures for servicing and troubleshooting the cooling system.
* **Fuel System:** Detailed information on fuel system components, maintenance, and repair.
* **Emission Control System:** Information on emission control systems and their operation.
* **Engine Electrical System:** Comprehensive coverage of engine electrical systems, including wiring diagrams and troubleshooting.
* **Service Equipment:** Guidance on using specialized tools and equipment for servicing the engine.

This manual is a valuable resource for anyone looking to perform their own repairs and maintenance on Nissan L20A and L24 series engines. Its detailed information and clear instructions enable you to save money and gain a deeper understanding of your engine.

The Nissan L20A and L24 series engines were a family of inline-four cylinder petrol engines produced by Nissan from 1967 to 1984. They were renowned for their reliability and robust design, powering a wide range of Nissan vehicles, including the Datsun 510, 610, and 810 models, as well as the Nissan Laurel, Skyline, and Bluebird.

The L20A, introduced in 1967, had a displacement of 1952cc and featured a cast iron block with an aluminum cylinder head. It was initially equipped with a single overhead camshaft (SOHC) and a single carburetor, delivering a respectable power output. The L24, introduced in 1971, boasted a larger displacement of 2389cc and came equipped with a dual overhead camshaft (DOHC) configuration, enhancing performance and efficiency. Both engines employed a pushrod valve actuation system and a timing chain for reliable operation. The L24 also saw numerous variations throughout its production run, including fuel injection and turbocharged versions, further expanding its power capabilities and appeal.