Knock on start

[stutz427]

Have a Neon with a 2.0. Upon start up you hear a distinct knock. Limited to one cylinder. Sounds almost like a wristpin. It does speed up with increased engine speed. However if it was a wristpin or rod knock it would continue even when warm. This one goes away in about a couple of minutes. Is this something normal? Where should I look to find the problem? Is there something in the valve train that would cause this? Engine has about 75,000 on it and runs well otherwise.

[rhandwor]

Do you have oil pressure immediately on start up?
A partially plugged oil filter or strainer starting to plug up will cause low oil pressure.