Section 05 ENGINE (4-TEC)
Subsection 01 (LEAK TEST)
1
R1503motr157A
2
3
1. Measuring gauge
2. Adequate adapter for spark plug hole
3. Air supply
Note the amount of leaking or percentage (de-
pending on tester).
LEAKAGE
PERCENTAGE
ENGINE
CONDITION
0% to 7%
Excellent condition.
8% to 15%
Fair condition; proceed with
tuned up or adjustment.
16% to 30%
Poor condition; engine will run
and performance might be
down in some cases.
30% and higher
Very poor condition, diagnose
and repair engine.
Proceed the same way with remaining cylinders.
Diagnose
Pressurize area to be tested, spray soap/water so-
lution at the indicated location and look and/or lis-
ten for air bubbles.
– air escaping on intake port means leaking intake
valve(s)
– air escaping on exhaust port means leaking ex-
haust valve(s)
– air bubbles out of coolant tank means leaking
cylinder head gasket
– air escaping into crankcase area means exces-
sively worn and/or broken piston rings.
INSTALLATION
NOTE:
For installation use the torque values and
Loctite products from the exploded views (refer to
proper engine subsection).
For installation, reverse the preparation proce-
dure.
NOTE:
Prior to inserting the ignition coil in its lo-
cation, apply some Molykote 111 (P/N 413 707
000) around the seal area that touches the spark
plug hole. After installation, ensure the seal seats
properly with the engine top surface.
General Engine Leakage
Spray soap/water solution at the indicated location
and look and/or listen for air bubbles.
Paying attention to the following checkpoints:
– clamp(s) tightened
– coolant hoses
– air/oil escaping from crankcase means dam-
aged gasket(s) and/or loosened screws (refer
to ENGINE BLOCK)
– air/water escaping from cylinder/head means
damaged gasket(s) and/or loosened screws (re-
fer to CYLINDER HEAD AND VALVES)
– oily contamination on weep hole (speed sen-
sor area) means a damaged oil seal on coolant
pump shaft
– coolant escaping from weep hole means a dam-
aged rotary seal on coolant pump shaft (refer to
COOLING SYSTEM)
smr2004-Complete Line Up
183
www.SeaDooManuals.net
Содержание 2006 GTI
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