Probable Piston Knock

calis281
Sun, 27 Jun 2010 02:52:41 +0000
Maintenance/Repairs

I just had my car shipped from Oklahoma to Cambridge, MA. When the guy took the car off the truck, I hear a knocking sound. I have owned this car since it was new and have never had any issues at all with the power train. I backed the car up and as the RPMs went up, so did the knock. I let it idle for a few minutes with the hood open. The sound was certainly coming from the engine block and to me sounded like one of the pistons was knocking on something. I then closed the hood, and backed up the car further to park it so it wasn’t in the middle of the street. After parking the car, the sound was gone. I drove it around the block, still no sound. What gives? The car has 47k miles on it and is still under its manufacturers warranty, so I think I’m going to take it in anyway, but what could cause this issue and how concerned should I be about this?

8 posts - 6 participants