What causes motorcycle exhaust pipes to discolor?

What causes motorcycle exhaust pipes to discolor?

There is a simple reason your motorcycle exhaust pipes might have turned blue. Essentially, the metal becomes discolored as a result of the heat of the exhaust going through the pipes. Heat turns chrome blue, but if your exhaust pipe is made of stainless steel, the excessive heat will turn it golden color.

Why do Harley pipes turn blue?

Motorcycle exhaust pipes turn blue as a result of extreme heat passing through them. This is usually caused by the motorcycle running lean, meaning there is too much air and too little gas being mixed together which causes a higher temperature to pass through the exhaust pipes.

Why does my bike exhaust turn red when idle?

Even if the bike produce more heat when riding, you may even 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 be because of too little cooling.

What happens when the Idle is high on a Harley Davidson?

Strange that there are no historical codes since you did say you saw the check engine light come on. (Could be you went through 50 key cycles with no engine issues) When you get off the interstate & the idle is high,,, if you were to power it off and restart the bike, does the idle calm down or does it resume the high idle.

Why is my Harley Davidson overheating in traffic?

324-340 not bad and if you are driving down the road it would be cooler. The trouble happens in traffic or any long periods of the bike running and standing still. Passenger comfort, hot legs, from the rear cylinder and exhaust are usually the issue.

Why would my exhaust manifold be glowing red hot?

In a 2002 Toyota Sienna i change the spark plugs after a 30 minute drive it stared shaking a it was night by that time we know it, that the manifold was red hot i disconnected the catalytic converter and still got red hot i don’t k now what can it be; how do i check if is late ignition timing or if is something more. 101 people found this helpful.

Even if the bike produce more heat when riding, you may even 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 be because of too little cooling.

When does an exhaust pipe / muffler get hot?

The catalytic converter often reaches a temperature of 750 degrees. However, if you have more unburned gases leaving the combustion chamber or one of the cylinders is not working, you will experience a tremendous increase in temperature. The exhaust pipe muffler temperatures reach their peak when the car is on the road rather than when it’s idle.

In a 2002 Toyota Sienna i change the spark plugs after a 30 minute drive it stared shaking a it was night by that time we know it, that the manifold was red hot i disconnected the catalytic converter and still got red hot i don’t k now what can it be; how do i check if is late ignition timing or if is something more. 101 people found this helpful.

324-340 not bad and if you are driving down the road it would be cooler. The trouble happens in traffic or any long periods of the bike running and standing still. Passenger comfort, hot legs, from the rear cylinder and exhaust are usually the issue.

What causes motorcycle exhaust pipes to discolor?

What causes motorcycle exhaust pipes to discolor?

Motorcycle exhaust pipes turn blue as a result of extreme heat passing through them. This is usually caused by the motorcycle running lean, meaning there is too much air and too little gas being mixed together which causes a higher temperature to pass through the exhaust pipes.

How do I stop my exhaust from bluing?

Ways to stop or cover up bluing

  1. Make sure your engine is tuned.
  2. Air leaks can cause an excessive heat buildup.
  3. New motorcycle engines go through a break-in period.
  4. Painting the inside of the exhaust pipes with a ceramic based liquid like DYNO-KOTE™ or Blue Shield can insulate the pipes from intense heat and bluing.

Why are the pipes on my motorcycle discolored?

I doubt that your pipes are plated a “Gold color”; more than likely it is discoloration of the existing plating from the exhaust heat or a ceramic coating process. Even Stainless Steel will discolor when exposed to temperatures that engine exhausts produce. There are several commercial products out there that might help to clear the discoloration.

How to get rid of discolored exhaust pipes?

Scrub the outside of the pipes with the rag, then rinse off the soap with water. Continue to work with the motorcycle soap until you’ve dissolved all grime from your pipes to restore the color. Wait for your exhaust pipes to feel cool to the touch, then soak a rag with a petroleum-based cleanser.

What causes the chrome on a motorcycle exhaust to turn blue?

The chrome plating on motorcycle exhaust systems discolors to a dark blue in almost all cases. This is assumed to be due to the heat effects and oxidation. It has been expressed in some circles that the bluing is due mainly to the copper underplate and should be eliminated if the copper was not used and the nickel was applied directly to the steel.

What should I do if my exhaust pipes keep bluing?

If the bluing returns, you should have your engine and exhaust system checked by a licensed motorcycle mechanic. Painting the inside of the exhaust pipes with a ceramic based liquid like DYNO-KOTE™ or Blue Shield can insulate the pipes from intense heat and bluing.