2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 196Get this manual
Section 04 ENGINE (4-TEC) Subsection 01 (LEAK TEST)
LEAK TEST
VERIFICATION
Before performing the cylinder leak test, verify the following: clamp(s) tightness radiator and hoses oily contamination on leak indicator hole means damaged oil seal on water pump shaft coolant out of leak indicator hole means damaged rotary seal on water pump shaft (refer to COOLING SYSTEM) coolant escaping from water pump housing means damaged gasket(s) andor loosened screws (refer to COOLING SYSTEM)NOTE: For all the checkpoints mentioned above, see the appropriate engine section to diagnose and repair the engineRemove: radiator capUnplug and remove ignition coilRemove spark plug from cylinder headNOTE: Ignition coil can help removing spark plug