Jump to content

Knocking at start-up...


ketsac

Recommended Posts

I've noticed a knocking sound from the engine compartment at cold start-up's. Gone in 1-2 seconds. Guessing is a engine lubrication problem. I run Mobile 1 at 5-7 thousand mile intervals and the 2012 ES350 has ~60,000 easy miles in the AZ. sunshine. 

Is this development bad on the mechanics? Should I be alarmed?

Any idea as to a cause and any potential fixes? Recommended oil aditives?

How's that for four questions? Thanks for any assistance.

chris

 

 

Link to comment
Share on other sites


Greetings Trevor.

I have little knowledge of auto mechanics however, it could be a tapping in that it is more of a high-end sound vs. a low-end knocking...

If you made me guess, I'd call it Top-end tapping.

 

Thx.  chris

 

 

Link to comment
Share on other sites

If it's top end rattle e.g. hydraulic lifters priming up, then it shouldn't be anything to worry about if it disappears in 1-2 seconds.

Mobil 1 is probably the best oil you can get so shouldn't worry about that unless its completely the wrong grade/spec for the car.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...

Forums


News


Membership