Big bill for timing chain replacement, and associated pump

What is your question?

Oil pan full of carbonized sludge, chain loose, gear worn, oil pump needed replacing, results in a $7,000 bill. Can't you get a whole new motor for that amount. Done at San Juan Capistrano dealership in California.. I am original owner, never overheated motor that I know of, drove only 10,000 miles per year mostly town. please respond to texhaines@mac.com I will sign up.