Q: Snowmobile loses power, then dies and will not start back up.

asked by on February 22, 2017

1994 Yamaha Vmax 600 2 stroke. Starts up fine, runs good for about 5-10 minutes, then dies. Only starts if gas put directly into engine through pouring into spark plugs holes. Starts right up and will run for another good 5-10 minutes. Seems to lose power towards lower rpm but once it eventually gets up to the power band it is very fast and sounds great.

Hi there. Unfortunately, we don’t offer mechanical tips or advice; or service off-road vehicles. You might be better served to search online for snowmobile performance shops or online forums to receive the advice you’re looking for. Thanks.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Bad smell, probably antifreeze leaking
The smell of coolant or antifreeze is always concerning, especially with a car that has such low mileage as yours. Given the symptoms you are describing, the best thing you can do is have your vehicle serviced as soon as...
Where is the spare tire?
The spare tire sits under the bed of the truck, at the very rear. It is easy to remove the spare tire with your hands. Just use the jack handle to winch the tire down and unhook it from the...
Why does my audio system display “Enter Code”?
Your car’s audio system is equipped with an anti-theft device designed so that if it were stolen, a thief wouldn’t be able to use it. It’s based on a vehicle-specific code that must be programmed into the audio system after...
Car having problems starting.
These cars are known for having faulty crankshaft position sensors. This sensor can cause an extended cranking condition, which eventually turns into a vehicle that won't start. Checking for diagnostic codes stored in your power train control module (PCM) would...
Rough idling and lacking horse power - 1982 Mercedes Benz 380SL
Hello. There could be a problem with the coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement). I would also suspect that there could be a problem with the ignition control unit. The fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement) could also be contributing to the problem you are...
Sometimes when driving a wrench light comes on and my car is hard to shift
This may be related to low transmission fluid, or potentially a faulty transmission speed sensor (https://www.yourmechanic.com/services/transmission-speed-sensor-replacement) or transmission control solenoid. Every time a gear change is required, the car's computer activates a transmission solenoid, which directs transmission fluid into the...
I just replaced my egr valve and notice while driving for a couple of minutes my Electronic throttle Control light starts flashing
Hello. There are several components that can effect the electronic throttle control system. The issue may pertain to the recent work done, or may be a separate issue all together. The system depends on sensor inputs from all over the...
The check engine light and the VSA came on at the same time. Is the van (Honda Odyssey 2010) ok to drive.
VSA is Honda's name for the electronic stability control system. Most vehicles today have it and use different names. The stability system usually piggy backs on the anti-lock brake system, using the same wheel speed, brake light, steering angle, and...
power steering fluid
A power steering fluid service (https://www.yourmechanic.com/services/power-steering-fluid-service) should be done every 3-4 years. It was once an overlooked service but like any other fluid service (engine oil, transmission fluid, etc), the more frequently you change it, the more life you will...

Related articles

Does a Cracked Window Need to Be Replaced?
Windows Windows are not just for looking through. Though it may seem that visibility is the sole purpose of your car’s windows, they are also for structural support. Every piece of glass on your car -- the windshield, rear window,...
A Mechanic's Guide to Restoring Classic Cars
Classic car restoration is a way to build your dream car. Before you start you need to set your goals, create a budget, and find the right car parts.
B1948 OBD-II Trouble Code: Climate Control Water Temperature Sensor Circuit Short To Ground
B1948 means there is a fault in the coolant temperature signal circuit, likely due to a problem with one of the electrical components.