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Bob4
Account deleted

join:2012-07-22
New Jersey

Ticking noise from engine

downloadengine1.wmv 2,245,578 bytes
I'm hearing a ticking noise at half engine speed. I tried to capture it in the above video; You can hear it best towards the end of the video. It's loud enough that I can hear it inside the car at idle.

I'm thinking it's related to the valves. Any ideas/comments?

2012 Honda Accord, 4 cyl iVTEC w/ timing chain (not belt), ~12000 miles. Other than the noise, the engine is running OK. Gas mileage is fine.


Cho Baka
Premium,MVM
join:2000-11-23
there
kudos:2

1 recommendation

Sounds like injector noise.

Try disconnecting all 4 and seeing if it still makes the noise.
--
The talented hawk speaks French.


santy
Don't Follow Me, I'M Lost Too
Premium,MVM
join:2001-06-10
Wilmington, IL
kudos:1
reply to Bob4
I would take it to a Honda dealer since it's still under warranty.
Also, if you disconnect all four injectors the car won't run. and disabling them one at a time is not recommended.

Car is under warranty so I would just take it in and let them diagnose it.
--
You don't quit playing 'cause you're OLD. You're old BECAUSE you quit playing!!


Cho Baka
Premium,MVM
join:2000-11-23
there
kudos:2
Aw, man I was kidding.
I thought that was too obvious.
--
The talented hawk speaks French.

dragonfly5

join:2012-09-04
reply to Bob4
I got your joke


santy
Don't Follow Me, I'M Lost Too
Premium,MVM
join:2001-06-10
Wilmington, IL
kudos:1
reply to Cho Baka
said by Cho Baka:

Aw, man I was kidding.
I thought that was too obvious.

It was obvious, but you know someone, somewhere is gonna try it and then complain..
--
You don't quit playing 'cause you're OLD. You're old BECAUSE you quit playing!!


Cho Baka
Premium,MVM
join:2000-11-23
there
kudos:2
Reviews:
·TekSavvy DSL

1 recommendation

Yes, but they would have a quiet engine and would be saving a lot of fuel.

Seriously though, your suggestion about taking it to the dealer is spot-on. Comparing it to like models to know whether the noise is characteristic is an extension of that.
--
The talented hawk speaks French.


santy
Don't Follow Me, I'M Lost Too
Premium,MVM
join:2001-06-10
Wilmington, IL
kudos:1
I have no problem with trying to see what the problem is yourself, but when it's under warranty and that new the dealer is the only option. Why take the chance on declined warranty coverage after you try to do something yourself and can't fix it and make it worse to boot.
--
You don't quit playing 'cause you're OLD. You're old BECAUSE you quit playing!!


pferrie3

join:2005-01-27
Boston, MA
reply to Bob4
I disconnected all 4 injectors on my car .. WOW now its as quiet as an electric car at idle...


EGeezer
zichrona livracha
Premium
join:2002-08-04
Midwest
kudos:8
reply to Cho Baka
I'll bet the noise goes away..


guhuna
5149.5
Premium
join:2001-03-31
Port Costa, CA
reply to Bob4
Its the injectors, my Honda j35 motor has noisy injectors and make that exact sound.

Bob4
Account deleted

join:2012-07-22
New Jersey
Yeah, but there's a louder tick once every other engine revolution. I'll see if I can get a better recording.


alkizmo

join:2007-06-25
Pierrefonds, QC
kudos:1
You can hear 500 ticks a second? Woah

Bob4
Account deleted

join:2012-07-22
New Jersey
said by alkizmo:

You can hear 500 ticks a second? Woah

No, but 500 ticks per minute is pretty easy.

I actually counted 30 ticks and timed it at 4.12 seconds. That's 7.28 ticks per second.

The engine was going 1000 RPM, which is 16.7 revolutions per second.


alkizmo

join:2007-06-25
Pierrefonds, QC
kudos:1
said by Bob4:

The engine was going 1000 RPM, which is 16.7 revolutions per second.

Damnit I'm really not all there in the head today. (Well I'm at work, Im sure the boss will appreciate). I had RPMs as if it was RPS while making my stupid reply.

Still though, ya I guess with the audio file you can tell by putting it on an audio file editor with that graph thing. I didnt think of that since I never listened (No speakers on my PC at work).

Bob4
Account deleted

join:2012-07-22
New Jersey
reply to Bob4
downloadengine2.wav 1,264,456 bytes
I think this recording is better. You can really hear it at around 0:32.

Bob4
Account deleted

join:2012-07-22
New Jersey
Made an unplanned trip to the Honda dealer today. Check engine light on / car bucking / no power. Turned out to be a bad #2 spark plug.

I asked them to listen to the engine and they said they didn't hear anything unusual.

Bob4
Account deleted

join:2012-07-22
New Jersey
I listened again, and the ticking noise is definitely gone. Changing the spark plug got rid of the ticking noise! I thought that was bizarre, but a Google search returned many instances of loose spark plugs causing ticking noises. Here's an example of one from a BMW forum:
said by some guy :
My wife's 97 540i recently started producing a loud ticking sound that appeared to come from the left side of the motor. I did several searches on this forum to find that the ticking sound is very common with these cars and aparently normal as well, so i didn't worry too much about it. But the car was also sputtering when taking off from a stop in first gear, and recently started throwing a CE light as well. The code ended up being random cylinder misfires, so after searching this forum for that as well (possible causes could be spark plugs fouled out by leaking valve cover gasket, bad coils, and even bad catalytic converters), so i decided to just check all the spark plugs first since that wouldn't cost me any money.

During the spark plug inspection, i found that two of them were REALLY loose (i could turn them 2 or 3 times with my finger tips before they seated into the head) and a few others could be broken loose really easily. I inspected and cleaned each plug, and made sure they were seated properly, and the car runs like a friggin hot rod now, and there is ABSOLUTELY no ticking sound coming from the motor anymore at all.

Check your plugs! Just thought i'd share.
I was also having some strange engine behavior. Most notable was rapid engine RPM changes at high RPMs. (And this iVTEC engine is built to run at high RPM.) I bet the spark was cutting out and the RPMs would drop, then the spark would come back and the RPMs would go back up, then the spark would cut out again, etc, etc. All because of the spark plug! I bet it's been that way all along, or at least for the past 6+ weeks.


Cho Baka
Premium,MVM
join:2000-11-23
there
kudos:2
reply to Bob4
I've seen that once in 20 years.

In that case it was customer installed spark plugs that were the culprit.
--
The talented hawk speaks French.

dragonfly5

join:2012-09-04
reply to Bob4
Yep I had this happen before too.


Rungel
Run A Mile Live Awhile
Premium
join:2001-12-05
CT
reply to Bob4
This sounds like my honda accord 2004 v6.. except mine goes away after it gets warmed up. this happened after they did a tuneup.. but i can never get the sound when i bring the car to them..


Dragasoni
We're All Mad Here
Premium
join:2001-12-14
Palm Bay, FL
reply to Bob4
Every Honda I've ever owned made these sounds until it warmed up, all 6 of them. I wouldn't worry about it.

The 1992 Accord junker I drive now sounds awful when cold. But then again, it keep it 1-2 quarts low which seems to prevent oil consumption. Never figured out why that is either. But who cares, the car was free and has lasted 3 years and 45,000 miles with only 3 repairs: Muffler, A/C blower fan, and rear brake lines that rusted out (car is from NY).

Just drive it and ignore the sound like I do.


Rungel
Run A Mile Live Awhile
Premium
join:2001-12-05
CT
That's what i'm doing.. i think it does get better as it warms up.. I'm supposed to go into the shop soon for a recall .. don't know if i'll bother mentioning it