I have a 2005 Ford Explorer. Every time I start my car and it has been off for more than a couple of hours it makes a clicking noise that goes away as the car warms up. This happened once last fall and I took the car in for an oil change and the noise got much better then completely stopped. It just came back within the last couple of weeks, but I just had an oil change about a month ago. I checked the oil and it’s not low. The noise was going away after less than a minute, but now it has started lasting more like five minutes (depending on how long it takes me to get on the freeway). By the time I arrive to work the car is quiet.
I keep reading that this probably has something to do with the lifters. Some people say that it might be engine sludge, etc and that a cleaning agent might be helpful. Other people say that cleaning agents might be harmful. Someone told me I just need to get my lifters replaced. That’s an expensive repair. I am just not sure what to do and I am afraid that just taking it to my mechanic will lead to getting new lifters whether completely necessary or not and I can’t really afford it.