98 OBW with a 2.5 has a knock/slap on cold starts. Once it warms up it goes away. Is this common?

98 OBW with a 2.5 has a knock/slap on cold starts. Once it warms up it goes away. Is this common?

 

not common, but not unusual either. they say it's not an indicator of imminent engine failure. in other words, it's noisy, but not deadly.

 

search slap and read up on it.

 

this link taught me a lot:

 

http://remanufactured-engines.com/page4.htm

mattri,

Several years ago I bought a 97 OBW LTD that developed the dreaded piston slap at 23 000 km. The dealership I frequented at that time said they suspected that my problem was a bad internal weld on the Y pipe and nothing more serious. I then did some research on my own, found out they knew what the problem was but blew me off. I then switched to another dealership and have been with them from 02, and very happily so. Regardless, the piston slap that my car exhibited sounded as a "pock-pock-pock" while accelerating when cold. As the engine heated up, the noise disappeared or almost entirely, up until I sold the car 5 years later at 263 000 km. During that whole time the noise was annoying, but had no effect on the drivability of the car. If your car sounds similar, then you have an annoyance, but nothing more serious to worry about. Good Luck!

good to know, thanks for the reply