2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 48Get this manual
Section 02 TROUBLESHOOTING GUIDE Subsection 02 (ENGINE (4-TEC))
Symptom: OIL CONTAMINATION (WHITE APPEARANCE)(cont'd)
4Check oil for particles (may indicate possible engine internal damages)- Oil contamination due to metal or plastic particlesReplace possibly damaged part(s) including oil and oil filterUse recommended oil (refer to TECHNICAL DATA)
CYLINDER AND CYLINDER HEAD
Symptom: UNUSUAL ENGINE NOISE ANDOR VIBRATIONS1Check noise coming from cylinder head area- Faulty chain tensionerReplace spring andor mechanism- Chain guide worn outReplace chain guide- Stretched chain andor worn out sprocketsReplace chain and sprockets- Sprocket screws got looseRetighten screws with recommended torque- Hydraulic element inside rocker arm(s) is(are) worn out (valve adjustment)Replace rocker arm(s)- Rocker arm screws not tightenedReplace screws and perform the torque procedure (refer to CYLINDER AND CYLINDER HEAD)
Symptom: OIL CONTAMINATION ON CYLINDER ANDOR CYLINDER HEAD1Check screws for torque- Loose screwsRetighten screws with recommended torque- Gaskets are brittle, hard, worn out or otherwise damagedReplace damaged gaskets, O-rings or the V-ring on breather- Contact area between spark plug and stick coils fouled by oilClean spark plug area and replace spark plug tube