I have a question regarding piston slap in first generation 5.4 liter engines?
My 1998 Expedition was purchased new in 1998 and has had the engine oil changed at very regular intervals. On average the oil has been changed about every 3000 miles and the truck now has only 118,000 miles.
I'm guessing I heard the first signs of piston slap when the Expy had approximately 90,000 miles on it. The piston slap only occurs when it is cold outside (maybe 50 degrees and below) and only last for approximately the first 2 or 3 miles of driving after which it goes away. Now that it is summer and very warm outside, there is no indication of piston slap whatsoever ……………… but, it will be back later this fall.
Is this fairly normal in the 5.4 Expeditions?
Is this harmful to the engine OR merely a sign of normal wear and tear?
My 1998 Expedition was purchased new in 1998 and has had the engine oil changed at very regular intervals. On average the oil has been changed about every 3000 miles and the truck now has only 118,000 miles.
I'm guessing I heard the first signs of piston slap when the Expy had approximately 90,000 miles on it. The piston slap only occurs when it is cold outside (maybe 50 degrees and below) and only last for approximately the first 2 or 3 miles of driving after which it goes away. Now that it is summer and very warm outside, there is no indication of piston slap whatsoever ……………… but, it will be back later this fall.
Is this fairly normal in the 5.4 Expeditions?
Is this harmful to the engine OR merely a sign of normal wear and tear?