Honda Car Forum

Okay, to start off...I'm no car expert so help me please. Car has been making a weird noise for the past week. The car is an automatic and every time I drive and hit higher RPM's before the car changes into next gear....it makes this weird rumbling noise...i assume it was the belts or something....but I procrastinated and didn't look into it...so today after driving at 40+ mph the rumbling noise really kicked in and was really loud...then I hear this knocking noise...I assume the pistons are damaged? I've no clue...but the car still starts and drives...just that it has really no power and the knocking noise is there....help me out here....is this going to cost lots of $$$!? Any advice will be appreciated. So....in the end...never procrastinate! You know your car best and when it's making a noise that is not normal...get it checked out! Thanks to God the 15 mile tow home went okay...im still alive.

It could be a number of things. I would have a mechanic check it out. I can't just say what it is, I'm not looking at the car.

With out being there,hard call, pull the dip stick and smell the oil,it will smell burned,look for oil leaks the piston connecting rod will break and make a hole somewhere.It sounds like you spun a bearing on the connecting rod. Accelerate pounding noise gets loud and fast and goes away,for a brief moment.decelerate and the same thing,same sound.There are several websites that sell low mileage used engines,I have put in 200 of these engines with only one failure,and they made good on that one.Check out world auto parts.Now find someone to put the engine in.

i think if its was sumthin serious with the pistons that motor would be gone by now. lettin the pistons bang against the cylinder wall like that

from experience it sounds like your motor is going to blow. get to a honda dealership asap.