What causes the exhaust to get red hot?
What causes the exhaust to get red hot? The reason the muffler is glowing red is because the exhaust temperature is off the chart. This (highly likely) means that the ignition timing is out, or the fuel mixture is too lean. Is it normal for a dirt bike exhaust red hot? Even if the bike produces more heat when riding, you may find that the glowing gets worse when standing still at idle. This shows how important the airflow is to keep the system cool. So if your exhaust is glowing red when standing still at idle, it may just...