How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask P.J. Your Own Question
P.J.
P.J., Technician
Category: Motorcycle
Satisfied Customers: 740
Experience:  10 years as a mechanic and fabricator in a privately owned, local, custom bike shop.
75205684
Type Your Motorcycle Question Here...
P.J. is online now
A new question is answered every 9 seconds

I have a 2008 Harley-Davidson soft tail anniversary. I

Customer Question

I have a 2008 Harley-Davidson soft tail anniversary. I started it the other day and let it idle for a while. It eventually shut off and it had a white dust all over the engine and was hissing inside the engine with a faint smoke coming off the motor. I left it for a couple of hours to cool off and started it for about 1 minute. I know it overheated what else could have happened and other than changing all of the fluids is there anything else I should do. And what was that white dust?
Submitted: 8 months ago.
Category: Motorcycle
Expert:  P.J. replied 8 months ago.

Overheating can do different types of damage. It certainly isn't good in any way. The long term effects are typically hardened gaskets and seals that begin to leak. It can cause piston rings to lose their tension which will allow oil to bypass, compression to decrease, and likely cause the engine to begin to smoke due to oil bypassing them.

There really isn't anything to do other than changing the fluids. I would suggest doing the plugs as well as the ceramic can develop cracks.

The white dust is the oxide layer that naturally forms on the aluminum being "cooked" off the base metal. It will naturally reform over time. Do not use any type of strong cleaning agents on the engine for a while. When the oxide layer is stripped away the aluminum is very susceptible to staining.

I hope this helps. Please let me know if I can be of further assistance. Also, please leave a positive rating for my service today. Thanks, P.J.