I saw that you had answered a question about carbon build up and piston repair on IS250. I have a 2007 IS250 with 43,000 miles and took it to dealership with check engine light and rough idle. I only have had the car for 1 year but it was regularly serviced at Lexus dealership before and after I got it. I was not low on oil, I don’t know if it got premium gas all of its life. The Dealership told me that it was carbon build up and already replaced my pistons but I am concerned that it may happen
again after warranty. They said it was a “permanent” fix. I would like to keep the car a long time but I have a few questions:
Country: United StatesMake: LexusModel: IS250Year: 2007
What is "bump off the rev limiter" How do I know when that happens?
Do I need to do an engine soak once a year? how do I know when to do it so that I keep from damaging the pistons?
I am trying to decide if I should keep the car. Do you think my engine will have a shorter life or more problems since it has already happened to my car? Thanks, Lonnie
Thanks for your help, this is the kind of information I was looking for. Do I need to consider buying an extended warranty? If so, where should I get it from?
Lexus Master Certified, 11 yrs w/ Lexus Dealership, Elite of Lexus 2000-2011, 17yrs Auto Industry
An extended warranty would not be a bad idea. If your car has navigation I have seen the screen fail often lately. A very expensive repair. If you buy a warranty make sure it covers that. I would talk with your dealer about warranty options.