Troubleshooting Engine Yamaha Snowmobile

Troubleshooting the Yamaha snowmobile engine is the process of investigating the motor and its internal parts, to determine and solve problems by following a systematic path of checking and testing. The following problems are common with the Yamaha snowmobile, download a repair manual instantly to get the remedy on how to fix the issue. 

Major Engine Troubleshooting Conditions

• Engine will not start, just cranks
• Engine has no spark and won’t crank over
• No fuel reaching the carburetor
• Noise coming from engine sounds like valve chatter
• Piston noise from engine
• Engine stalls after starting
• Engine won’t start, no spark at spark plugs
• Engine does not start, fuel not reaching cylinders
• Engine won’t fire, fuel won’t ignite
• Engine won’t idle, stalls when put in gear
• Engine loses power when accelerating
• Engine overheating
• Engine backfires
• Engine blowing blue black smoke out exhaust
• Engine four-cycles (floods excessively)
• Engine shuts off
• Engine stops when applying gas
• Engine won’t turn off

Minor Engine Troubleshooting Problems

• Air leak at cylinder-to-cylinder
• Carburetors not adjusted correctly
• Gasoline is contaminated with water
• Engine flooded with gas
• Secondary compression low
• Choke cable(s) not adjusted properly
• Carburetor dirty or adjusted incorrectly
• Malfunction with fuel pump
• Impulse hose broken or cracked
• Damaged air-intake silencer
• Gas tank vent hose clogged
• Fuel hose pinched or broken
• In-line fuel filter blocked
• Obstruction in muffler
• Excessive carbon build up in exhaust ports
• Spark plugs fouled
• Faulty or loose high tension coil/wires
• Ignition timing adjusted incorrectly
• Compression test low
• Charge coil faulty 
• CDI unit not working
• Oil-injection pump malfunction or adjusted wrong
• Spark plug heat range too hot
• Low coolant level
• Heat exchangers  — no snow for cooling
• Piston ring grooves have carbon build-up
• Cylinder head lose or blown head gasket 
• Air/fuel mixture ratio to lean
• Engine sized
• Ground connectors dirty
• Wiring harness shorting or disconnected 
• Emergency stop switch test
• Ignition timing sensor
• Injector dropping resistor faulty 
• Fuel pressure regulator test
• No compression in cylinder 1 

Trouble-shooting the Yamaha snowmobile engine is a form problem solving the motor. It’s a systematic and logical search for the source of the engine problem so that the machine’s fault can be solved, and the motor be brought to operation again. Download a factory repair manual and get all the troubleshooting information you need to fix your snowmobile. 

Yamaha Repair Manuals Available:

1982	1983	1984	1985	1986
Bravo 250 Bravo LT 250 BR250	Bravo 250 Bravo LT 250 BR250	Bravo 250 Bravo LT 250 BR250 VMAX 540 V-max 540 vmx540 vmx540h vxm540j vmx540k vmx540I Phazer 480 pz480	Bravo 250 Bravo LT 250 BR250 V-max 540 vmx540 vmx540 h vxm540 j vmx540 k vmx540 Phazer 480 pz 480	Bravo 250 Bravo LT 250 BR250 V-max 540 vmx 540 vmx 540 h vxm 540 j vmx 540 k vmx 540 Phazer 480 pz480
1987	1988	1989	1990	1991
Bravo 250 Bravo LT 250 BR250 Exciter Exciter deluxe ex570 ex570I ex570m ex570em ex570n ex570en ex570hp ex570ep ex570ehp v-max 540 vmx540 vmx 540h vxm 540j vmx 540k vmx540 Phazer 480 pz480	Bravo 250 Bravo LT 250 BR250 Exciter Exciter deluxe ex 570 ex 570I ex 570m ex 570em ex 570n ex 570en ex 570hp ex 570ep ex 570ehp Phazer 480 pz480 Enticer 340 Enticer 400 Long track reverse deluxe et400tm et400tm et400trm et340trm et340 et340lt et340ltr	Bravo 250 Bravo LT 250 BR250 Exciter Exciter deluxe ex 570 ex 570 I ex 570 m ex 570 em ex 570 n ex 570 en ex 570 hp ex 570 ep ex 570 ehp Phazer 480 pz480 Enticer 340 Enticer 400 Long track reverse deluxe et 400tm et 400tm et 400trm et 340trm et 340 et 340lt et 340ltr	Bravo 250 Bravo LT 250 BR 250 Exciter Exciter deluxe ex570 ex570I ex570m ex570em ex570n ex570en ex570hp ex570ep ex570ehp Phazer 480 pz480 Enticer 340 Enticer 400 Long track reverse deluxe et400 tm et400 tm et400 trm et340 trm et340 et340 lt et340 ltr Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf
1992	1993	1994	1995	1996
Bravo 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz 480p pz 480ep pz 480r pz 480er pz 480str pz 480t pz 480et pz 480stt pz 480w pz 480ew pz 480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480 p pz480 ep pz480 r pz480 er pz480 str pz480 t pz480 et pz480 stt pz480 w pz480 ew pz480 stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf v max-4 750 v max-4 800 750st long track 800st long track mountain max 800 vx750 vx750st vx800 vx800st mm800 vmax venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz 480p pz 480ep pz 480r pz 480er pz 480str pz 480t pz 480et pz 480stt pz 480w pz 480ew pz 480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf v max-4 750 v max-4 800 750st long track 800st long track mountain max 800 vx750 vx750st vx800 vx800st mm800 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tfv max-4 750 v max-4 800 750st long track 800st long track mountain max 800 vx750 vx750st vx800 vx800st mm800 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700
1997	1998	1999	2000	2001
Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw Venture 485 vt480 vt485 480xl 485gt 485tf vt480 vt480gt vt480tf vt480gt vt480tf v max-4 750 v max-4 800 750st long track 800st long track mountain max 800 vx750 vx750st vx800 vx800st mm800 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 Phazer Phazer II (2) Faser 480  485 pz480p pz480ep pz480r pz480er pz480str pz480t pz480et pz480stt pz480w pz480ew pz480stw venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700	Bravo 250 Bravo LT 250 BR250 Phazer 480 pz480 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 Phazer 500 Venture 500 500 mountain lite phazer 500 deluxe venture 500 2-stroke pz500 pz500dx vt500xl	Bravo 250 Bravo LT 250 BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 Phazer 500 Venture 500 500 mountain lite phazer 500 deluxe venture 500 2-stroke pz500 pz500d x vt500 xl	Bravo 250 Bravo LT 250 BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 Phazer 500 Venture 500 500 mountain lite phazer 500 deluxe venture 500 2-stroke pz 500 pz 500dx vt 500xl
2002	2003	2004	2005	2006
BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700	BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 rx1	BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 rx 1	BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 rx 1	BR250 venture venom mountain max mountain max 600 & 700 sx venom 600 venture 600 venture 500 mountain 700 rx 1 apex attak rx10 apex er rx10r apex gt  rx10gt apex rtx rx10rt apex rtx er rx10rtr apen mountain rx10m attak rxw10
2007	2008	2009	2010	2011
BR250 apex attak rx10 apex er rx10r apex gt  rx10 gt apex rtx rx10 rt apex rtx er rx10 rtr apen mountain rx10 m attak rxw 10 phazer venture lite 500cc 4-stroke venture light pz50 pz50fx pz50rt pz50gt pz50mw pz50mt mountain lite pz50vt pz50mp	BR250 apex attak rx10 apex er rx10r apex gt  rx 10gt apex rtx rx 10rt apex rtx er rx 10rtr apen mountain rx 10m attak rxw 10 phazer venture lite 500cc 4-stroke venture light pz50 pz 50fx pz 50rt pz 50gt pz 50mw pz 50mt mountain lite pz 50vt  pz 50mp	BR250