Contents: Preliminary Settings ⬇ Secondary settings ⬇
every 7500 km or once every 6 months.
If from the moment of purchasing a new car the owner carefully adheres to the schedule of current maintenance, checks the fluid levels and the condition of components subject to increased wear often enough, the power unit of the vehicle will serve reliably for many, many thousands of kilometers. At the same time, the need for additional repair and restoration work will be reduced to a minimum.
On the other hand, it is very likely that if regular maintenance procedures are neglected, the moment will soon come when the engine's efficiency will noticeably decrease. This is especially true if you buy a used car whose previous owner was negligent in caring for it. In this case, the new owner will not be able to avoid the need for additional restoration work.
If you suspect engine wear, a lot of useful information about the condition of its internal components can be obtained by checking the compression pressure in the cylinders (see Chapter Engine repair, depending on the vehicle model). Based on the results of the check, it is possible to fairly accurately estimate the volume of upcoming restoration work. For example, if the compression check revealed signs of significant internal engine wear, performing the usual list of maintenance procedures given below in this Chapter will not restore the unit's parameters and will only be a waste of time and money. In this case, it is necessary to first carry out a complete overhaul of the engine.
Below is a list of checks, settings and adjustments that can restore the operating parameters of an engine that has lost its original characteristics.
Preliminary Settings
a) Clean the battery and check its general condition (see section Weekly checks);
b) Check the levels and condition of all fluids relevant to engine operation (see section Weekly checks).
c) Check the condition and tension of the accessory drive belt (see section Checking the condition of the auxiliary drive belt);
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d) Replace the spark plugs (see section Replacing Spark Plugs - 1.3L Models or Replacing Spark Plugs - 1.6L Models);
e) Check the condition of the air cleaner filter element, replace if necessary (see section Replacing the air cleaner filter element);
f) Replace the fuel filter (see section Replacing the fuel filter);
g) Check the condition of all hoses, try to identify any fluid leaks and eliminate their causes (see section Checking the condition of the hoses and identifying sources of leaks);
If performing the above checks and adjustments does not produce the desired result, perform the procedures listed below.
Secondary settings
In addition to the initial setup procedures, perform the following:
a) Check the proper functioning of the charging system (see Chapter Engine electrical equipment);
b) Check the correct functioning of the ignition system (see Chapter Engine electrical equipment);
c) Check the proper functioning of the power supply system (see Chapter Power supply system).