What causes a backfire on a 99 venture?

What causes a backfire on a 99 venture?

So, how to fix your backfire problems in the 99 venture? The Backfire is caused when coming off or going on the pilot circuit of the Mikuni 32bds carbs. In other words, coming of idle or decelerating with the throttle closed. The pilot circuit mixture is preset to a too lean position at the factory.

What does too lean mean on a Yamaha Venturer?

In other words, coming of idle or decelerating with the throttle closed. The pilot circuit mixture is preset to a too lean position at the factory. Too lean means that the fuel air ratio is more air than fuel, resulting in high combustion and exhaust gas temperatures.

Why does my Yamaha Venturer say pop Pow Bang?

When the super heated exhaust hits any unburned fuel mixture which is in the exhaust pipe/muffler, it ignites it and your bike says Pop POW Bang etc. a. Fire your mechanic and learn to fix it yourself.

So, how to fix your backfire problems in the 99 venture? The Backfire is caused when coming off or going on the pilot circuit of the Mikuni 32bds carbs. In other words, coming of idle or decelerating with the throttle closed. The pilot circuit mixture is preset to a too lean position at the factory.

In other words, coming of idle or decelerating with the throttle closed. The pilot circuit mixture is preset to a too lean position at the factory. Too lean means that the fuel air ratio is more air than fuel, resulting in high combustion and exhaust gas temperatures.

Can a Ck engine go to 5000 rpm?

Also, newer motors go into “safe mode” if they sense a problem (over heat, low oil, etc.) they limit the RPM to protect the motor. You usually get a ck engine led though. First, you should lot run your engine up to 5000 rpm’s without it being under load. Being a 2012, isn’t it under warranty?

Can you run an engine up to 5000 rpms?

First, you should lot run your engine up to 5000 rpm’s without it being under load. Being a 2012, isn’t it under warranty? Your dealer should not be putting you off until June, that is terrible service. If you live anywhere near Lomira, give Josh at the Boat Doc a call. He is the best in the state on Mercury motors.