Re: To Rebuild or not to Rebuild that is the question
An oil analysis may show any abnormalities, but it may be difficult to know if they are caused by short term or long tern problems. As mentioned, a compression test may show which cylinder, if any has a problem. The "miss" may be caused by a bad injector, perhaps damaged by the heat? If you are not losing coolant or oil and it runs OK, you may be lucky?