General Repair Instructions; Foreign Particles In Engine; Contact Corrosion; Routing And Attaching Pipes And Wiring - Seat Leon 2013 Workshop Manual

4-cylinder petrol engine (1.2 l direct injection, 4 V, turbocharger, EA211) - Edition 02.2017
3.3

General repair instructions

♦ Clean tools and workbench etc. before working on the injection
system.
♦ If the high-pressure fuel lines are to be re-used, you must mark
them before removal. High-pressure pipes must always be re-
installed on the same cylinder.
♦ Position high-pressure pipes so they are free of stress. First
tighten all unions hand-tight and then tighten to torque.
♦ Never attempt to bend high-pressure fuel lines to shape.
♦ When working on any parts of the high-pressure fuel system,
tools may only be used for loosening and tightening pipe un‐
ions. All other components must always be removed and
installed by hand without using tools or other equipment.
♦ All cable ties which were opened or cut during removal must
be renewed at the same points.
♦ Fuel hoses in engine compartment must only be secured with
spring-type clips. The use of clamp or screw-type clips is not
permissible.
3.4

Foreign particles in engine

♦ When performing assembly work on the engine, all open pas‐
sages in the intake and exhaust systems must always be
sealed with suitable plugs to prevent foreign particles from en‐
tering the engine. Use engine bung set - VAS 6122- .
♦ In the event of mechanical damage to one of the cylinder
banks, the intake and exhaust systems and combustion cham‐
bers of the opposite cylinder bank must always be examined
for foreign particles to prevent further damage occurring later.
Note
In the event of mechanical damage on turbocharger, proceed ac‐
cording to chapter
⇒ "1.2 Turbo compressor: removing and fitting", page 191
3.5

Contact corrosion

Contact corrosion can occur if unsuitable fasteners are used (e.g.
bolts, nuts, washers, etc.).
For this reason, only fasteners with a special surface coating are
fitted.
In addition, all rubber and plastic parts and all adhesives are made
of non-conductive materials.
If there is any doubt about the suitability of parts, a general rule
is to use new parts ⇒ Electronic Parts Catalogue (ETKA) .
Take into account:
♦ Use only genuine parts which are tested and compatible with
aluminium.
♦ The use of genuine parts is always recommended.
♦ Damage resulting from contact corrosion is not covered by
warranty.
3.6

Routing and attaching pipes and wiring

♦ In order to rule out mix-ups and ensure that lines/wires/cables/
hoses/pipe are all installed in their original position, the lines
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by SEAT S.A. SEAT S.A does not guarantee or accept any liability with
respect to the correctness of information in this document. Copyright by SEAT S.A.
León 2013 ➤ , León ST 2013 ➤
.
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3. Repair instructions