# Why is my engine so noisy? **URL:** \ **Category:** General Discussion\ **Created:** [December 8, 2015, 3:39am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898 "2015-12-08T03:39:13Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\ **Post date:** [December 8, 2015, 3:39am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/1 "2015-12-08T03:39:13Z")
2015 Jeep Cherokee 2.4 engine. Engine is very noisy at idle. Not noticeable when driving. It has variable valve timing or valve lift. I also has a big black hat on the engine, I wonder if that is supposed to quiet the engine some, if so it isn’t working. ---
**Author:** ![wesw](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wesw/32/2713_2.png) [@wesw](https://community.cartalk.com/u/wesw)\ **Post date:** [December 8, 2015, 3:42am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/2 "2015-12-08T03:42:49Z")
you think yours is noisy, you should hear my 1990 Cherokee with the 4.0… ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [December 8, 2015, 5:08am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/3 "2015-12-08T05:08:21Z")
Hopefully it is under warranty, check your oil level, had a oil and filter change within manual suggestions? ---
**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\ **Post date:** [December 8, 2015, 6:01am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/4 "2015-12-08T06:01:56Z")
Barky, It is under warranty it has 4,750 miles on it, has sounded this way since day one. Runs great and I love the 9-speed transmission. ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [December 8, 2015, 6:07am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/5 "2015-12-08T06:07:35Z")
Have you taken it to the dealer and complained? Just in case. You could also try another of the same and see if that one’s noisy too. If so, it’s normal. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [December 8, 2015, 6:52am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/6 "2015-12-08T06:52:40Z")
The noise was there from day one. 4000 miles later it is a problem ? ---
**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\ **Post date:** [December 8, 2015, 7:22am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/7 "2015-12-08T07:22:55Z")
well the dealer is just gonna say it is normal I hoped someone had one and could tell me it wasn’t. ---
**Author:** ![Joe-Guy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joe-guy/32/124_2.png) [@Joe-Guy](https://community.cartalk.com/u/Joe-Guy)\ **Post date:** [December 8, 2015, 7:52am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/8 "2015-12-08T07:52:48Z")
If the dealer says it’s normal, ask him to demonstrate it by starting up another one or two Jeep Cherokees on the lot. ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [December 8, 2015, 8:29am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/9 "2015-12-08T08:29:14Z")
**_@EllyEllis "Engine is very noisy at idle."_** Calling it “noisy” is just too general for me to imagine. Is there any way to zero in on a better description, or “by saying it sounds like a \_\_\_\_\_\_\_\_\_\_\_ ?” ( hive of bees, broken exhaust manifold, marbles shaken in coffee can, finger nails on a chalkboard, etcetera ). _ **CSA** _ ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [December 8, 2015, 8:59am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/10 "2015-12-08T08:59:47Z")
_**@EllyEllis What Is The Date Of Mfg? (Sticker On Driver’s Door Or Adjacent Door Opening Lock Pillar.)**_ I see that they made a handful of **2015 Jeep Cherokee 2.4L** s for a few days in **February /2015** that were built with **incorrect crankshaft tolerances** , but I see no indication that they are noisy. Some of these get new engines. _ **CSA** _ ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [December 8, 2015, 9:16am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/11 "2015-12-08T09:16:13Z")
_**@EllyEllis Some 2014 And Early 2015 Jeep Cherokee 2.4Ls Emit A Sputtering Sound From The Exhaust And Require Installation Of A New Resonator.**_ What Is The Date Of Mfg? CSA ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 8, 2015, 9:43am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/12 "2015-12-08T09:43:45Z")
Does it have direct injection? That can sound like a diesel at idle. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [December 8, 2015, 10:27am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/13 "2015-12-08T10:27:37Z")
I haven’t noticed this engine to exceptionally noisy but the Tigershark engine does use a unique method of valve actuation. The valve lift, timing and duration is controlled hydraulically. This has been claimed to improve fuel economy but results have not proven this. Perhaps future developments with this system will show improvement. ---
**Author:** ![galant](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@galant](https://community.cartalk.com/u/galant)\ **Post date:** [December 8, 2015, 10:55am UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/14 "2015-12-08T10:55:30Z")
Is this a direct injection engine? If so, they tend to be noisy and almost sound like a diesel. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 8, 2015, 5:36pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/15 "2015-12-08T17:36:57Z")
Simple test-start another one at the dealer and listen. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [December 8, 2015, 8:06pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/16 "2015-12-08T20:06:55Z")
I’ll be the third person to ask… **Does this engine have direct injection?** So many questions, so few responses… ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [December 8, 2015, 8:18pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/17 "2015-12-08T20:18:22Z")
Can you post a short video of the engine at idle, both with and without the engine cover? ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [December 8, 2015, 9:46pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/18 "2015-12-08T21:46:20Z")
For the record, I went to the Jeep site to try to find out whether this has a direct injection engine and was totally unable to find out. They have a list of “comfort and convenience” features the length of my arm, but absolutely zero technical data. I guess nobody cares anymore. ---
**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\ **Post date:** [December 8, 2015, 9:59pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/19 "2015-12-08T21:59:55Z")
From what I can tell, the 2.4L Tigershark uses typical multiport fuel injection. It doesn’t appear to have direct injection. ---
**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\ **Post date:** [December 8, 2015, 10:08pm UTC](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898/20 "2015-12-08T22:08:18Z")
I will check the date of Mfg. To me the noise sounds like to much clearance between the cam and lifters. It doesn’t click but thumps. thump, thump thump It almost sounds like an exhaust leak at the engine, as I said, it has always been this way. I am thinking that the big black plastic cover on the engine magnifies the sound. [Next page](https://community.cartalk.com/t/why-is-my-engine-so-noisy/91898.md?page=2)