When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm getting close to half a million kilometres in my LS430 and I want her to see 1 million, so I'm continuing proper maintenance and listening closely for potential issues.
I'm not very into engines so please excuse my lack of knowledge in that area when I say I have noticed an 'unbalanced' rough firing that starts and ends around 1,800-2,200 rpm.
It happens cold and warm, any fuel type, at any point in the life of the oil, summer or winter, AC on or off, in gear or neutral.
What's the likely cause?
Is it normal?
How can it be avoided and is it viable to do so?