Hissing from the rear of the car...

[rick c]

I've just stripped out the rear of the car ready for a trip to the 'ring, and the loss of sound proofing has made me notice a new noise.

When I turn the engine on there's a slight 'hissing' sound coming from the back somewhere.

I don't think its an exhaust leak. Does the fuel filter or pump hiss by any chance?

 

[LA-DC5 ITR]

and the loss of sound proofing

what sound proofing? :xconfused:

mine is stripped & i get a whistle when the window is open, its just the air blowing through the holes etc. also i can hear every stone & raindrop hitting the underside of the car.

 

[rick c]

So there shouldn't be a hissing noise of any type? I'd better look into it more in that case. Must be the exhaust then?

 

[dibbles00]

Might be the fuel pump?

 

[LA-DC5 ITR]

fuel pump is a buzz not a hiss

 

[rick c]

fuel pump is a buzz not a hiss

I presume the fuel pump would be located in the circular section near the rear bench that has the wire going to it?

I must admit it didn't strike me as being an electrical noise at first (i.e. a buzz) but I'll have a more careful listen later and try to locate the source of the noise exactly.

 

[LA-DC5 ITR]

fuel pump is a buzz not a hiss

I presume the fuel pump would be located in the circular section near the rear bench that has the wire going to it?

yeah thats it.

 

[celox performance]

You'll hear a lot more noises once you've stripped the rear. You'll be able to hear the fuel pump and exhaust more. I had what could be described as a hiss coming from the fuel pump or exhaust when mine was stripped, but I can't remember which it was now :?

 

[rick c]

OK its definitely not the exhaust.

I've just got under the car and its coming from the fuel tank area. Its definitely the fuel pump / filter.

It sounds like if you shake a fizzy bottle and open the lid just a little, its like a fizzing liquid sound.

Its very noticeable, and when I put my foot down it gets lounder and (I think) increases in pitch.

If noone else has this then I can only imagine my fuel filter isn't properly attached?

 

[rick c]

Booked it in with Honda on Monday to take a look at it. I go to the 'ring on Wednesday so I hope there isn't a problem

When I floor it the noise is a bit like having a turbocharger sitting in the car (albeit a quiet one!) Very strange. Hope Honda know what they're doing with it =;

 

[George K]

Fuel tanks are semi sealed nowadays to stop fumes. iirc there should be a filter on the breather and also a one way valve (air in only) on the filler cap. Quick test is to take the cap off and see if the hissing stops.

 

[rick c]

Take the fuel cap off while the engine's running? That a good idea?

 

[George K]

Take the fuel cap off while the engine's running? That a good idea?

Only when stationary!!

 

[Dc5Dub07]

Booked it in with Honda on Monday to take a look at it. I go to the 'ring on Wednesday so I hope there isn't a problem

When I floor it the noise is a bit like having a turbocharger sitting in the car (albeit a quiet one!) Very strange. Hope Honda know what they're doing with it =;

I doubt a Honda dealer would have any special insight into DC5 "problems" as they never imported or sold them. :roll:

Anyhow, "hissing like a Turbo charger" is the noise of the exhaust gasses escaping through the car's exhaust system, perfectly normal.. The fact that the noise increases when you floor it supports that also.

 

[rick c]

Just an update for anyone who might come across this later...

I've just had a neighbour round who's a mechanic and he's confirmed its just the fuel pump and perfectly normal.

Weird that I never had that noise in my 306 and I had the interior stripped in that most of the time. But then the fuel pump/filter is much closer to the front in the Teg.

 

[celox performance]

Take the fuel cap off while the engine's running? That a good idea?

I know people who refill with petrol with the engine running [-X

 

[Dc5Dub07]

Just an update for anyone who might come across this later...
I've just had a neighbour round who's a mechanic and he's confirmed its just the fuel pump and perfectly normal.
Weird that I never had that noise in my 306 and I had the interior stripped in that most of the time. But then the fuel pump/filter is much closer to the front in the Teg.

Also just to add, that noise like a "low-hissing sound" can also appear as if its coming from the front of the car... Just noticed it on the motorway now that i have a baffle in the exhaust, the car is real quiet so i can hear little noises like that..