General information about engine overhaul This Part of the Chapter contains descriptions of the procedures for removing and installing the power unit, as well as general overhaul of the cylinder head and...
Oil pressure check 1. A drop in oil pressure can be seen as a sign that the engine is in need of a rebuild. The oil pressure warning light is not diagnostic equipment that monitors the...
Checking the compression pressure in the cylinders 1. The results of the cylinder compression test provide an indication of the general condition of the top of the engine components (pistons, piston rings, valves,...
Diagnostics of the engine condition using a vacuum gauge The use of a vacuum gauge at a relatively low cost allows you to get enough capacious information about the internal state of the engine. Based on the results of the...
Alternative options for engine reconditioning schemes During the independent overhaul of the engine, the reader will be faced with the need to choose the most appropriate scheme of actions for him, which determines the...
Removal and installation of the engine Warning! Do not forget that gasoline is a highly flammable liquid! Observe all applicable fire safety precautions when working on power system components. Do not smoke,...
Disassembly of the cylinder head Note. A new or remanufactured cylinder head can always be ordered at a car service workshop or at the warehouse of the car manufacturer's company service center. Due to...
Cleaning and checking the condition of the cylinder head A thorough cleaning of the cylinder head and valve train components, followed by a detailed inspection of their condition, will help determine the approximate amount of...
Valve maintenance Due to the complexity of the nature of the work and the need to use special equipment, it would be best to entrust the maintenance of valves, their guide bushings and...
Cylinder head assembly 1. Regardless of whether the head was sent to the workshop for valve service or not, before assembling it, carefully check the cleanliness of all components again. 2....
Removal of connecting rod and piston assemblies Note. Before proceeding with the removal of the connecting rod and piston assemblies from the engine, it is necessary to remove the cylinder heads, the oil pan and the...
Removing the crankshaft Note. Removal of a cranked shaft is possible only from the engine taken out from the car. It is understood that the flywheel / drive plate, crankshaft pulley, timing...
Cleaning the engine block 1. Leaning a blunt drift against the edge of the squeeze plug, turn it in its seat at 90°. After all the plugs are deployed, it will be quite simple to remove them from...
Block Status Check 1. The unit must be thoroughly cleaned beforehand. 2. Perform an external inspection of the unit for signs of corrosion, cracks and other damage. Check the condition of...
Honing cylinder mirrors 1. Before assembling the engine, it is mandatory to honing the cylinder mirrors in order to achieve the correct fit of the piston rings on them, which ensures proper...
Checking the condition of the crankshaft 1. Use a whetstone, file or scraper to remove burrs from the edges of the oil holes. 2. Wash the crankshaft with solvent, then dry thoroughly using compressed air if...
Engine assembly procedure 1. Before proceeding with the assembly of the engine, make sure that you have all the necessary parts, materials and tools, which include the following: a) Standard set...
Installation of piston rings 1. Before installing new piston rings, check the gaps in their locks. It is understood that the side clearances of the rings in the piston grooves have already been...
Installation of a back epiploon of a cranked shaft 1. On all engines considered in this Manual, a single-section rear crankshaft oil seal is used, which is placed in the socket of a special holder, which in turn is...
Trial run and running-in of the engine after overhaul Attention! When starting the engine for the first time after the completion of its refurbishment, it is imperative to have a class B fire extinguisher at hand! 1. After...
Engine Specifications Engine maintenance procedures that do not require removing it from the vehicle. Engine code Models 2.0 l VQ20DE Models 3.0 l VQ30DE (DOHC) and VG30DE (SOHC) Number and...