Knocking/rattle after oil change

[Mspeed78]

On my first start up after changing the oil, the engine made a knocking/rattle sound for about a second and went away.

Oil filter and drain plug were all reinstalled with no leaks and engine oil was at the proper level. Is this normal?

[M5_Raz]

Originally Posted by Mspeed78

On my first start up after changing the oil, the engine made a knocking/rattle sound for about a second and went away.

Oil filter and drain plug were all reinstalled with no leaks and engine oil was at the proper level. Is this normal?

Did you pre-fill the oil filter and housing with oil before installing?

If not, then it's normal. However, it's good practice to do so.

[Blaxwil]

Exactly. Great practice to always fill the oil filter. You probably experienced a short dry start. You'll be okay as long as you don't continue to do it.

[Mspeed78]

Originally Posted by M5_Raz

Did you pre-fill the oil filter and housing with oil before installing?

If not, then it's normal. However, it's good practice to do so.

I didn't pre-fill the oil filter so this must be it. Thanks.

This is the second time I have done this. Did I possibly damage anything?

[M5_Raz]

Originally Posted by Mspeed78

I didn't pre-fill the oil filter so this must be it. Thanks.

This is the second time I have done this. Did I possibly damage anything?

Nope, you should be fine. I wouldn't worry about it!

[Noggie]

Air in the valve lifters, completely normal if it goes away after a second or two.
Could have the same if the car sits for a while between start ups.
This is because all the oil has been drained to the sump and the oil need a couple of seconds to be redistributed inside the engine.

I have an old car I drive 1-2 times a month, sounds awful every time I start it for 1-2 seconds

If you have it when the engine is running you have lost oil pressure and a huge issue.