Notices
IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Knock in engine?

Thread Tools
 
Search this Thread
 
Old May 15, 2007 | 05:39 PM
  #1  
RamshakleZ's Avatar
RamshakleZ
Thread Starter
Pole Position
 
Joined: Jan 2007
Posts: 270
Likes: 0
From: Houston, TX
Default Knock in engine?

So, I've noticed that the engine doesn't sound very smooth when standing outside. I'm sure most of you have ready my thread about the loud fan... which seems to be how this car is designed. But, what about the engine itself? I'm not a tech so maybe I'm using the wrong terminology but it sounds like it is knocking?? It doesn't sound like it is smooth as silk like I'd expect a luxury vehicle's engine to be. you can really hear it when you go though a drive through and the sound of the engine bounces against the wall back through the open window. (it sounds fine from inside the cabin with the window closed, though)

Is this too just the way the car is designed?
Reply
Old May 15, 2007 | 05:55 PM
  #2  
IS_Mine's Avatar
IS_Mine
Lexus Test Driver
 
Joined: Oct 2006
Posts: 1,445
Likes: 0
From: MS
Default

Are you sure you aren't talking about the sound the injectors make?
Reply
Old May 15, 2007 | 07:05 PM
  #3  
T4styPh0's Avatar
T4styPh0
Lexus Test Driver
iTrader: (2)
 
Joined: May 2007
Posts: 949
Likes: 1
From: GA
Default

Yea because I read somewhere that it makes that sound because the engines are direct fuel injected.
Reply
Old May 15, 2007 | 07:08 PM
  #4  
RamshakleZ's Avatar
RamshakleZ
Thread Starter
Pole Position
 
Joined: Jan 2007
Posts: 270
Likes: 0
From: Houston, TX
Default

Could be it.... like I said - I'm no tech so I'm probably using the wrong terminology. I'll try to take a video with sound of it and see if you can hear it.
Reply
Old May 15, 2007 | 07:12 PM
  #5  
DRivera250's Avatar
DRivera250
Lexus Champion
iTrader: (6)
 
Joined: May 2007
Posts: 1,694
Likes: 2
From: CA
Default

I believe you are talking about the sound of the injectors. I originally had this concern too, until me and my dad stopped by his mechanic to talk to him about some business. When he saw the car we pulled up in he immediately popped the hood and was amazed be the sound of the injectors. that knocking noise is the sound of the injectors.
Reply
Old May 15, 2007 | 07:24 PM
  #6  
IS_250's Avatar
IS_250
Pole Position
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Oct 2005
Posts: 2,107
Likes: 57
From: FL
Default

i dont really notice it unless im in a drive through, but yes all of the new toyota motors that use direct injection are loud. its been mentioned quite a few times now.
Reply
Old May 15, 2007 | 07:31 PM
  #7  
RamshakleZ's Avatar
RamshakleZ
Thread Starter
Pole Position
 
Joined: Jan 2007
Posts: 270
Likes: 0
From: Houston, TX
Default

ok, thanks. Makes me feel better to know it is normal... I can go back to enjoying the power now. :-)
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
starrk1982
IS - 3rd Gen (2014-present)
2
Aug 27, 2018 06:36 AM
pman6
GS - 3rd Gen (2006-2011)
11
Sep 13, 2016 11:00 AM
karlonas
GS - 3rd Gen (2006-2011)
0
Nov 4, 2015 01:10 AM
LexusIS-TL
IS - 2nd Gen (2006-2013)
4
Jan 26, 2008 08:41 PM
JamesN
SC - 1st Gen (1992-2000)
7
Jun 29, 2003 10:48 AM




All times are GMT -7. The time now is 07:49 PM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-18 14:36:21


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE