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ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z13DT ENGINE) 6-3-3
General Information
Statement of Cleanliness and Care
An automobile engine is a combination of many machined,
honed, polished and lapped surfaces with tolerances that are
measured in the thousands of an millimeter (ten thousands of
inch). Accordingly, when any internal engine parts are serviced,
care and cleanliness are important. Throughout this section, it
should be understood that proper cleaning and protection of
machined surfaces and friction areas is part of the repair proce-
dure. This is considered standard shop practice even if not specif-
ically stated.
• A liberal coating of engine oil should be applied to friction
areas during assembly to protect and lubricate the surface
on initial operation.
• Whenever valve train components, pistons, piston rings,
connecting rods, rod bearings and crankshaft journal bear-
ings are removed for service, they should be retained in
order. At the time of installation, they should be installed in
the same locations and with the same mating surfaces as
when removed.
• Battery cables should be disconnected before any major
work is performed on the engine. Failure to disconnect
cables may result in damage to wire harness or other electri-
cal parts.
• Throughout this manual, the four cylinders of the engine are
identified by numbers: No.1 (1), No.2 (2), No.3 (3) and No.4
(4) as counted from crankshaft pulley side (5) to flywheel
side.
General Information on Engine Service
The following information on engine service should be noted
carefully, as it is important in preventing damage, and in contrib-
uting to reliable engine performance.
• When raising or supporting engine for any reason, do not
use a jack under oil pan. Due to small clearance between oil
pan and oil pump strainer, jacking against oil pan may cause
it to be bent against strainer resulting in damaged oil pick-up
unit.
• It should be kept in mind, while working on engine, that 12-
volt electrical system is capable of violent and damaging
short circuits. When performing any work where electrical
terminals could possibly be grounded, ground cable of the
battery should be disconnected at battery.
• Any time the air cleaner, air cleaner outlet hose, turbo-
charger, intercooler, intercooler outlet hose or intake mani-
fold is removed, the intake opening should be covered. This
will protect against accidental entrance of foreign material
which could follow intake passage into cylinder and cause
extensive damage when engine is started.
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