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#4452557 - 07/07/17 05:54 PM Honda Pilot 2016 Cold engine nocking at low rpm
parshisa Online   content


Registered: 05/21/17
Posts: 535
Loc: TX
So I've recently noticed that overnight engine makes this knocking sound whenever you slightly tap the gas pedal with revs going up to 1,100-1,200. Higher rpm and idle sounds perfectly normal. But with added gas it sounds like Diesel engine. Anyway, once it warms up to operating temperature it completely goes away. Car has only 9k on the clock and has been trough 3 oil changes with the last being synthetic. Anyone else noticing same behavior on their engines?
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4452602 - 07/07/17 06:48 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
Rand Offline


Registered: 08/20/03
Posts: 12651
Loc: NE,Ohio
Things that come to mind.

Lugging.. the rpm is too low for the load.

possibly injector noise? from the direct injection.

Mild piston slap??
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#4452611 - 07/07/17 06:52 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: Rand]
mclasser Offline


Registered: 04/13/13
Posts: 2233
Loc: The Northeast
Originally Posted By: Rand
possibly injector noise? from the direct injection.

Mild piston slap??

What I was thinking too.

Oil level's good? And why so many oil changes in only 9k miles??
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#4452625 - 07/07/17 06:59 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: mclasser]
SatinSilver Offline


Registered: 01/24/08
Posts: 10179
Loc: OH
I started up a 2017 Pilot at the dealer with an msrp of $40k. It had sat over night and upon start up I was kind of surprised how loud it was. At the time I thought it was the injectors. Much better inside the cabin. It really clacks away when idling.

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#4452626 - 07/07/17 06:59 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: mclasser]
parshisa Online   content


Registered: 05/21/17
Posts: 535
Loc: TX
Oil level is good and always was good. Had first changed at 4k, then another 4k run on the dealer blend and finally made last oil change with Mobil 1AFE. MM would drop to 30% first two fills (mostly short trips with stop and go).
It is pretty loud. Louder then DI noise. So not even sure what to think of. Can the engine develop piston slap that early in its life?
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4452628 - 07/07/17 07:02 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: SatinSilver]
parshisa Online   content


Registered: 05/21/17
Posts: 535
Loc: TX
Mine sounds pretty normal when idling (even cold). But once you slightly tap the gas pedal it knocks.So, 1100-1300 rpm is the range when it knocks. Anywhere above or below just normal. Once it warms up knock disappears.
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4452832 - 07/07/17 09:42 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
Why speculate here instead of bringing it to the dealership?
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#4452857 - 07/07/17 10:01 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: FlyNavyP3]
parshisa Online   content


Registered: 05/21/17
Posts: 535
Loc: TX
I did. They say engine is perfectly ok and they can't hear anything.
i'm not trying to speculate or solve the problem online. I'm looking for the feedback from the members who has experienced this before. I think that's what the forum is about - share the knowledge.
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4452911 - 07/07/17 11:29 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
SubLGT Offline


Registered: 01/31/06
Posts: 2646
Loc: Idaho

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#4452932 - 07/07/17 11:56 PM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: SubLGT]
parshisa Online   content


Registered: 05/21/17
Posts: 535
Loc: TX
I did. Nothing there
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2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4452936 - 07/08/17 12:04 AM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
SubLGT Offline


Registered: 01/31/06
Posts: 2646
Loc: Idaho

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#4452949 - 07/08/17 12:38 AM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
Perhaps its the oil filter? When I first bought my former Lexus many years ago, it had a Fram oil filter and sometimes it knocked a little on an old cold start. Changed the oil and filter and the problem never reappeared.
It's a long shot, but worth mentioning.
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#4453042 - 07/08/17 05:58 AM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
Trav Offline


Registered: 11/20/06
Posts: 18900
Loc: MA, Mittelfranken.de
Don't fiddle around with filters and different oils its all pi$$in in the wind for the most part take it to the dealer. Noise from bad ADBV goes away as soon as the engine receives oil, a pitted cam lobe from improper hardening or break in, piston slap and a few other internals can cause engine noise cold and go quieter when warm.
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#4453047 - 07/08/17 06:07 AM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: parshisa]
555 Offline


Registered: 06/08/09
Posts: 372
Loc: New England
Piston slap pertains to your rod ratio, which is doesn't change. Since we don't know the length of the connecting rods, we can't figure this out and we don't need to.
Prefer the easy route, which is probably the most uninformed. Could be a cold start hardware/software setup. I know on Subarus there is a device called a "tumble valve generator"(TGV) that helps with cold start emissions and idle. Without delving into all the details of its operation, I know that the TGV's activation creates a substantial amount of unpleasant noise similar to a an engine being very low on oil. Taking into account the V6 in your Pilot and how it achieves its performance and that it has i-vtec there is probably a condition purposely occurring to create more intake velocity in the heads to better atomize the fuel in a cold environment(before engine is warmed up). I know this response is low on details but I hope it helps.
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#4453185 - 07/08/17 09:29 AM Re: Honda Pilot 2016 Cold engine nocking at low rpm [Re: 555]
Trav Offline


Registered: 11/20/06
Posts: 18900
Loc: MA, Mittelfranken.de
Why bother with all this, it doesn't matter how long or short the rods are if the piston is doing a friggin hula dance in the cylinder. its a 2016 under warranty, give it back to the dealer and let them worry about it. there even may be a TSB on it the dealer will know.
If you are interested in an in depth study of piston slap here you go.

http://www.sciencedirect.com/science/article/pii/S0888327014004610
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