2003 Lincoln Navigator Q&A
2003 Lincoln Navigator Question: My Navigator sounds like a desiel when I first start it. After 30 sec. Its gone.
without actually hearing it we can only guess.But common issues are with the timing chain tensioners and guides.Also make sure the oil level is full and oil change interval has not been neglected. - bmdouble
double is correct or poss camshaft follwers are worn - globalhelper