What makes a bike run rich?
The most likely culprit to a running rich problem is the carburetor. When motorcycles sit for extended periods of time the fuel starts to gum up and do weird things to a carburetor.
Is it better to run rich or lean?
TLDR – running just a little lean could improve fuel economy and give extra power. However, run too lean and you risk engine failure because the engine runs too hot. Whereas running rich can waste fuel and increase pollution but will not damage the engine.
Is it bad for a motorcycle to run lean?
It’s actually unhealthy for your motorcycle to be running lean, especially if it runs lean for a long time. It can potentially be harmful to your spark plugs, piston rings, and the oil inside the engine. The extreme heat that a lean engine emits is what can cause damage to these essential components on a motorcycle.
How do I know if my carburetor is running rich?
Typical symptoms of a rich mixture are:
- Poor fuel economy.
- Sluggish acceleration.
- Choke not needed from cold starts.
- Sooty or black spark plugs.
- Sooty or black muffler end pipes.
- Strong smell of gasoline when the machine is at idle.
- Uneven running (will often slow from regular idle rpms and then stop)
Is it OK to ride motorcycle with choke on?
The main reason that we advise not riding with the choke on is that it can be harmful to your motorcycle. Whilst driving a vehicle you need air and fuel in order for the engine to function, when you’re riding with the choke on there will be an excess of fuel which means that there will also have too much air.
What causes backfiring on a motorcycle?
The main reasons for motorcycle backfire include – rich or lean air-fuel mixture, masked spark plugs, high flowing exhaust, clogged jets or dirt in the carburetor.