Rattling noise with gas pedal

[Merlin8]

I have a 1991 318i m42 and there is a rattling noise when the gas pedal is pressed and released at very low speeds, or at least that's the only time I can hear it. No idea whats going on here. Help appreciated.

[roguetoaster]

Open the hood and actuate the throttle by hand and listen for the noise. If it's coming from the front of the engine you probably have a timing chain or tensioner issue.

If it's not coming from the engine bay the next best possibilities are the throw out bearing in the transmission or a drive shaft/differential issue.

[Merlin8]

Open the hood and actuate the throttle by hand and listen for the noise. If it's coming from the front of the engine you probably have a timing chain or tensioner issue.

If it's not coming from the engine bay the next best possibilities are the throw out bearing in the transmission or a drive shaft/differential issue.

definately coming from front of engine. i replaced the tensioner with the m44 tct 9k miles ago.

[roguetoaster]

How about a video or audio clip of the noise? I would suggest other items, but they are just a shot in the dark without actually hearing it.

[kwill22]

If it's engine related What RPM's does it happen at? Around 2.5-3k?

[Merlin8]

If it's engine related What RPM's does it happen at? Around 2.5-3k?

That's when it seems to go away.

[kwill22]

What oil weight are you using?

[Merlin8]

5 qts 10/40, 1 qt 10/30. The dealership put 5qts in and it really needs 6 and added the last qt on way home from palm springs since I was concerned about running low on oil. 10/30 was all the gas station had.

[kwill22]

M42 correct. Should take 5

[Merlin8]

M42 correct. Should take 5

That right, but at 5 the oil level is just barely above the bottom line on the dip stick.

[Merlin8]

Turns out the guide is broken and pieces where flying around making the chain loose and slapping around.