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Mike72

Yamaha Vmax 150

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Having trouble starting my cold vmax......it is carberated and is very hard to get started...once is does fire off it will start with ease after that...any suggestions?

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Spark plugs, compression?

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clean carbs and replace spark plugs is the only solution without more info or seeing it.

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Does if have a choke system or primer system. If choke, there will be butterflies in the front of the venture that closes when you press the choke. It it's a primer system, there will be no butterflies and should have a primer solenoid that lets gas go into the carbs when the choke is pressed.

Checking to make sure which ever system it has, is working would be my first step.

Doing a linc and sinc would be my next step.

From there, do a compression test and make sure all cylinders are within 5% of each other. Make sure the throttle is advance or something is holding the butterflies in the carbs open when doing this. If not, it could cause low readings.

One of these are what I mostly find with cold, hard start problems.

There are a number of other checks you can do, but these are a must do before doing anything else.

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