 BobAccount deleted join:2012-07-22 New Jersey Reviews:
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| Ticking noise from engine 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. |
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 TA63ST215WPremium,MVM join:2000-11-23 there kudos:2 | Sounds like injector noise.
Try disconnecting all 4 and seeing if it still makes the noise. -- The talented hawk speaks French. |
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 santyDon't Follow Me, I'M Lost TooPremium,MVM join:2001-06-10 Wilmington, IL kudos:1 | reply to Bob 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!! |
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 TA63ST215WPremium,MVM join:2000-11-23 there kudos:2 | Aw, man I was kidding. I thought that was too obvious. -- The talented hawk speaks French. |
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 | reply to Bob I got your joke  |
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 santyDon't Follow Me, I'M Lost TooPremium,MVM join:2001-06-10 Wilmington, IL kudos:1 | reply to TA63 said by TA63: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!! |
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 TA63ST215WPremium,MVM join:2000-11-23 there kudos:2 Reviews:
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| 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. |
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 santyDon't Follow Me, I'M Lost TooPremium,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!! |
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 | reply to Bob I disconnected all 4 injectors on my car .. WOW now its as quiet as an electric car at idle...  |
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 EGeezerGo CatsPremium join:2002-08-04 Midwest kudos:8 | reply to TA63 I'll bet the noise goes away.. |
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 guhuna5149.5Premium join:2001-03-31 Antioch, CA | reply to Bob Its the injectors, my Honda j35 motor has noisy injectors and make that exact sound. |
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 BobAccount 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. |
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 alkizmo join:2007-06-25 Pierrefonds, QC kudos:1 | You can hear 500 ticks a second? Woah |
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 BobAccount deleted join:2012-07-22 New Jersey Reviews:
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| 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. |
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 alkizmo join:2007-06-25 Pierrefonds, QC kudos:1 | said by Bob: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). |
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 BobAccount deleted join:2012-07-22 New Jersey Reviews:
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| reply to Bob
I think this recording is better. You can really hear it at around 0:32. |
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 BobAccount 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. |
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 BobAccount deleted join:2012-07-22 New Jersey Reviews:
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| 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. |
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 TA63ST215WPremium,MVM join:2000-11-23 there kudos:2 | reply to Bob 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. |
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 | reply to Bob Yep I had this happen before too. |
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