BRP BOMBARDIER DS250 2006, Shop Manual

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Section 02 TROUBLESHOOTING
Subsection 01 (TROUBLESHOOTING CHART)
Symptom:
LOW OR NO OIL PRESSURE/HIGH OIL CONSUMPTION.
(cont’d)
5. Check leak indicator hole if oil leaks (under magneto cover).
-
Oil leaking from leak indicator hole means a damaged oil seal and/or O-ring on water pump cover.
Replace both oil seals and O-rings (refer to
COOLING SYSTEM ).
6. Check oil orifice(s) on the oil pump suction side.
-
Oil orifice(s) is (are) clogged. Clean from contamination. Replace oil and oil filter if necessary
(refer to
LUBRICATION SYSTEM ).
7. Check oil pump function.
-
Oil pump rotor is out of wear limit. Replace oil pump shaft (refer to LUBRICATION SYSTEM ).
-
Oil pump seized due to oil leakage and/or air inclusion. Replace oil pump (refer to LUBRICATION
SYSTEM ).
-
Chain driving oil pump is broken or otherwise damaged. Replace chain and sprockets.
-
Incorrect oil being used. Use a high quality oil (refer to TECHNICAL SPECIFICATIONS ).
Symptom:
OIL CONTAMINATION (WHITE APPEARANCE).
1. Check leak indicator hole (under magneto cover) if coolant and oil leaks.
-
Leakage of oil/coolant mixture from leak indicator hole means damaged oil seals and/or O-rings
on water pump cover. Replace sealing rings, O-rings and refill with recommended oil and/or
coolant (refer to
COOLING SYSTEM ).
2. Check cylinder head and/or cylinder base gasket.
-
Gasket damaged or leaking. Retighten cylinder head with recommended torque and/or replace
gasket.
3. Check screws for torque.
-
Screws not fixed. Retighten screws with recommended torque and/or replace oil.
4. Check oil for particles (may indicate possible damages inside the engine).
-
Oil contamination due to metal or plastic particles. Replace possibly damaged parts. Use a high
quality oil (refer to
TECHNICAL SPECIFICATIONS ).
CYLINDER HEAD
Symptom:
UNUSUAL ENGINE NOISE AND/OR VIBRATION AT IDLE SPEED.
1. Check oil pressure relief valve function.
-
Valve opens due to contamination and/or spring damaged (valve remains open). Clean and/or
replace spring and/or mechanism.
-
Faulty chain tensioner. Replace spring and/or mechanism.
Symptom:
UNUSUAL ENGINE NOISE AND/OR VIBRATION ABOVE IDLE SPEED.
1. Check items 1 of UNUSUAL ENGINE NOISE AND/OR VIBRATION AT IDLE SPEED.
2. Check noise coming from cylinder head area.
-
Check valve timing. Readjust valve timing and/or replace defective part(s).
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Chain guide worn out. Replace chain guide.
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Stretched chain and/or worn out sprocket. Replace chain and sprocket at the same time.
-
Sprocket screw got loose. Retighten screw with recommended torque.
-
Rocker arm(s) is (are) worn out (valve adjustment). Readjust valve clearance and/or replace rock-
er arm(s).
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