the red pill

Is this normal? I've noticed it once since I've had the car and the sound went away after a minute.

xjrpilot

same here. mines not occasional though, i can definitely hear the lifters when i start it up in the morning. it goes away as soon as it warms up. i never hear them when the engine is warm. always in the morning.

thermonuclear

If it gets really bad or bothers you then you can replace them.

The bentley says to test the lifters you run the car above 2500rpm straight for 2-3 minutes, if it still has the sound then one or more of your lifters are bad.

quattro920

Yeah, they all do that. One thing that I do notice is the oil/filter that you use has an effect on the noise too. After I switched to Shell Rotella 5W40 Full-synthetic, and used a Bosch oil filter, I could only hear lifter noises after the car's been sitting for a LONG time. So try that and see if that helps.

Good luck!

Wilson.

thermonuclear

Oh, some people say "marvel mystery oil" helps quiet them temporarily, search forums for more inf.

SteveAngry

but the noise will come back sooner or later...

Try doing this to quiet the lifters: use Mobil 1 15-50 oil with a Mann or Mahle filter. Top up the oil to the absolute top of the full line on the dipstick. Careful not to overfill! Then run the engine a bit as Chris described in his post. If the lifters are still noisey then the only way you'll ever get them quiet is to replace them...

Do keep in mind that even newish lifters will chatter sometimes until they are pumped up with oil...

Steve
Michigan

AudiSport4000

My 4k did that once even after I added more oil and let it run for a good 5 mins. I had to actally drive the car about 10 miles, then the lifters shut up.