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Premium Member
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503 Posts
Discussion Starter #1
Hi guys,
I've never had a deisel before,so I'm not used to the sounds of the engine or driving, but lately I've noiced now that I've got the windows down, that when I take my foot off accelerator, there is - what sounds like a clicking noise (similar to riding a bicycle down a hill without your feet on the pedals) - sorry for the analogy, hard to describe the noise...

As soon as I press any of the pedals, either accellerator or brake, the noise stops, but then comes back when I take my foot off the pedals.
The noise isn't there when I hold the clutch in.
it's just when you're driving normally, and arent pressing any of the pedals.


Is this normal? timing belt, or any other parts of the engine?

or does it sound like I may have something wrong?



It's only a very faint fast clicking noise - i have to have windows fully down with no other traffic around, and radio off to hear it. as soon as I touch any of the 3 pedals, the sound stops.
never had this before on my previous Vauxhall petrol.


Thanks
Dan
 

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Peanut butter and Jelly
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327 Posts
Definitely not normal.. I don't have it..

thought you were describing a stone in your tread at first...
sorry mate can't help other than to say... pop down to your dealer..
 

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Cockup Specialist
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12,885 Posts
Do you have gooved / dimpled / drilled brake disks ?
 

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Premium Member
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700 Posts
I know exactly what this noise is (well almost), have actually been looking for someone else to mention it first so I didn't think it was just me :p its either the fuel system, turbo or EGR on the over-run, releasing excess pressure - perfectly normal. Mines does it when coasting down hills between 2.5k and 1k revs.

The ford ranger at work makes this noise much more prominently than the civic, sounds almost like when a bus/lorry's air compressor has reached peak reservoir pressure and is just 'cycling' and pumping out the excess air...

If your engine's not doing it, maybe something's blocked :police: ;)
 

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Premium Member
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503 Posts
Discussion Starter #6
Do you have gooved / dimpled / drilled brake disks ?
No I have standard discs.
Used to have drilled/grooved on my old car, so I know the sound that makes, that's more like fast air going through spinning holes - like a slight buzz..

Coste1l said:
screw in your tyre?
can't see any

john87 said:
I know exactly what this noise is (well almost), have actually been looking for someone else to mention it first so I didn't think it was just me :razz: its either the fuel system, turbo or EGR on the over-run, releasing excess pressure - perfectly normal. Mines does it when coasting down hills between 2.5k and 1k revs.

The ford ranger at work makes this noise much more prominently than the civic, sounds almost like when a bus/lorry's air compressor has reached peak reservoir pressure and is just 'cycling' and pumping out the excess air...

If your engine's not doing it, maybe something's blocked
so are you saying it's a normal sound? or are you saying if I have the noise, then something is blocked?
 

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...............Daedalus
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3,687 Posts
Mines always done this, never really thought anything of it TBH.

From reading what john says, I get the impression that it's a normal noise and nothing to worry about.
 

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Premium Member
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503 Posts
Discussion Starter #8
Thanks for your replies.
I got advise from the garage, and they say the noise is normal. It's the chain on the engine next to the belt. It works in similar way to a bicycle. When the pedals aren't used, it 'coasts' causing the clicking noise.

Because I've never had a deisel, or a chain engine, I'm not used to the different noises.
 

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Premium Member
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4,106 Posts
I must be going deaf - I've never heard that, ever, in my diesel :confused:
 

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...............Daedalus
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3,687 Posts
I must be going deaf - I've never heard that, ever, in my diesel :confused:
It's only a very faint noise. Maybe it's more prominant in some cars more than others? Or maybe you are just going deaf :p
 

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Premium Member
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700 Posts
Thanks for your replies.
I got advise from the garage, and they say the noise is normal. It's the chain on the engine next to the belt. It works in similar way to a bicycle. When the pedals aren't used, it 'coasts' causing the clicking noise.

Because I've never had a deisel, or a chain engine, I'm not used to the different noises.
Was this a Honda garage that told you this? :facepalm:

I'd steer clear if that was the case ;) they're telling you the timing chain works on the same principle as a bicycles' drive chain which features a ratchet clutch. They are saying that when you are not accelerating, the timing chain stops? :rolleyes:

I can say with 99.9% confidence that the clicking sound you are experiencing is related to a pressure (air/exhaust fume) release, or the sound of a valve rapidly opening/closing. Nothing to worry about though, but your garages' explanation of the sound is a bit baffling as AFAIK a cars timing belt/chain doesn't stop turning when you are coasting :popcorn2:
 

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Premium Member
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503 Posts
Discussion Starter #13
No it wasn't a Honda garage.
It may have been my interpretation of what the garage said.
He tried to explain how the chain works, and when the accellerator isn't being used, it's not the chain that stops, but the mechanism that drives it stops, so as the chain still moves, it makes the clicking noise.

He may have just told me that to make it sound simple... but if it's not even the chain that's making the noise, then shame on them, but at least everyone's confirmed it's a normal noise and nothing to worry about.
 

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Banned
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1,929 Posts
I might be mistaken, but I have always been under the impression that "coasting" is when you dip the clutch, usally whilst going down hill (predominately used to conserve fuel). Or not having a gear engaged, which is effectively the same thing...
 

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Premium Member
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700 Posts
I might be mistaken, but I have always been under the impression that "coasting" is when you dip the clutch, usally whilst going down hill (predominately used to conserve fuel). Or not having a gear engaged, which is effectively the same thing...
Well spotted ;) I'm not sure what the correct term for 'driving without accelerating but in gear' is, but its what was meant :D
 

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Premium Member
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4,106 Posts
Well spotted ;) I'm not sure what the correct term for 'driving without accelerating but in gear' is, but its what was meant :D
Slowing down ;)
 

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Cockup Specialist
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12,885 Posts
Well spotted ;) I'm not sure what the correct term for 'driving without accelerating but in gear' is, but its what was meant :D
Bad driving style ?
Cruising is the word Id use :D
 

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Premium Member
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16 Posts
I've noticed the same noise from my car when releasing the accelerator at very low revs (1000-1200 rpm) its noticeable when the revs are dropping. Someone pointed out that the noise is not normal and that I should get it looked at as soon as possible. I've asked a couple of independent garages near my work and they say the noise is not normal, none of them have actually come out to listen to the noise. I also took it into a Honda garage, who refused to come out to listen to it and advised me to book it in for an hour so they begin to strip down my car to diagnose the problem!!!

I've actually booked it into my local Honda garage for Wednesday 6th for them to locate the problem. They say the minimum cost would be £490 if I was to have both the chain and tensioner replaced! That includes 3 hours labour. I'm hoping to take it to a couple of local garages for a second opinion as I just feel Honda will charge me for unnecessary repairs.

I'll add an update tomorrow once my local garages have had a look
 
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