2005 Ford F150 V8 Two Wheel Drive Automatic 64700 miles
About 1,000 miles ago, I noticed my a clicking or knocking sound coming from the engine area of my F150 when I first put it in drive after it has been sitting for longer than 4 hours. As I increase pressure on the throttle, the clicking sound increases in frequency. After about 1 mile or so of normal driving, the sound goes away completely, not to return again until the car is parked for several hours. My mechanic is confident it is not a loose exhaust bolt, and fears it is a problem with the oil lifters.
To try to solve the problem, I did a complete oil change, added oil stabilizer, and used lucas tune up in a can in a tank of fuel. That hasn't dramatically improved the situation, though the clicking sound is not as loud now.
What should I do?
Monday, December 17th, 2007 AT 5:47 PM