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Petrol smell in boot


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Hi Denis,
my pump to PRV hose is crimped on the original fittings and I used the Gates Barricade 225 psi hose, which complies to SAE30R14T2. ID of the hose is 7.9 mm as printed on the hose. OD (measured) 15.0 mm.
I have no vibration issues, FWIW.

I also have a piece of Cohline 2240 ID 7.3 mm OD 13.5 mm (printed on the hose). The Cohline hose is less stiff, and has a slightly thinner wall. I think this will provide better pulsation damping if that is a concern for you.

Cheers,

Waldi

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I fitted new Cohline 2192 hoses from tank to filter to pump last week and vented the boot for a couple of days (kept the boot lid open). All fuel pipe is now R9 or R14 spec.
Closed the lid yesterday, and the boot still smells:(
So in my case it is not just the fuel pipe.

Next will be the upgraded filler hose (expected in 1-2 weeks).

I will take the tank our for a leak test then as well; it should be ok, I tested it during the rebuild, but not too much work.

Waldi

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Hi Roy,

that could be a possibility too, I have left the boot lid open and will heat the space a bit more so fuel, if any, will evaporate. I only have the side card boards and the felt-patch on the tank in though.

I take it step by step, just to understand what is the cause.

Cheers,
Waldi

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1 minute ago, Waldi said:

Hi Roy,

that could be a possibility too, I have left the boot lid open and will heat the space a bit more so fuel, if any, will evaporate. I only have the side card boards and the felt-patch on the tank in though.

I take it step by step, just to understand what is the cause.

Cheers,
Waldi

You would be surprised how much the smell can contaminate, you really need to strip everything out and scrub the whole area with soap and water and then see what its like. Those cardboards and the felt will be contaminated enough to smell.

Stuart.

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Thanks Stuart,

I currently have a large ventilator running in the boot, if I still have smell in 2 days I will remove all panels. Bottom where it can be accessed is already cleaned with soap.

Cheers,

Waldi

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1 hour ago, stuart said:

You would be surprised how much the smell can contaminate, you really need to strip everything out and scrub the whole area with soap and water and then see what its like. Those cardboards and the felt will be contaminated enough to smell.

Stuart.

That should include the panel at the rear of the interior [ rear seat back if still fibre board ]

 

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31 minutes ago, Waldi said:

Hi Roy,
I have an aluminium panel behind that panel so that should be ok.

Cheers,
Waldi

Gold Star and a tick v , that's the way to do it...sounds like Mr Punch !

Mick Richards

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Thanks Mick,
I installed the fire wall based per recommendation from….. you!
It keeps the petrol smells out of the cock pit (and inside the boot :ph34r:), and in case of an accident, hopefully will give us more time to get out safely.

All the best,
Waldi

 

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Thank you all for your further useful suggestions. There is no doubt with my car that the boot carpet certainly retains the petrol smell. Last summer I aired it on the washing line for a couple of days which helped to get rid of the smell at the time but I still have the issue! I am going to get a hose made up with the Cohline 2240 that is referenced above. Can anyone advise me of the diameter of the banjo fitting that is screwed into the Bosch pump outlet (I'm assuming that it is metric) and the size and type of thread that is used at the other end of the delivery pipe where it connects to the cast bracket that carries the PRV? The hose fitting is a right angle type on my car. The fittings seem to be readily available on eBay and other sites, such as Merlin Motorsport.

Regards,

Denis

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Hi Denis,

the banjo fitting depends on which Bosch pump you have. I used the old fittings, that worked ok. Also order new metal gasket rings (copper or aluminium). 

Waldi

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  • 4 weeks later...
On 3/13/2022 at 9:55 AM, Waldi said:

I fitted new Cohline 2192 hoses from tank to filter to pump last week and vented the boot for a couple of days (kept the boot lid open). All fuel pipe is now R9 or R14 spec.
Closed the lid yesterday, and the boot still smells:(
So in my case it is not just the fuel pipe.

Next will be the upgraded filler hose (expected in 1-2 weeks).

I will take the tank our for a leak test then as well; it should be ok, I tested it during the rebuild, but not too much work.

Waldi

Interesting update regarding the fuel smell:

Last week I replaced my 4-year old tank filler hose by the low emission hose from Revington. My boot is almost smell-free! 

Green text-hose is old, Mackay hose is new item from Neil Revington.
It is still a little early to draw conclusions, but it looks like the remaining stench in my boot was caused by this hose. When I removed the old hose it was soft and smelled on the outside surface.

So this could be a necessary step if you want to significantly reduce the stench.

All other hoses are R9 or R14 spec. The tank sender gasket is cork with Hylomar blue (silicone) sealant so apparently that one is not detrimental.

I can now pack stuff in the boot, maybe even our cloths!

 

Oh,
I found out (the gard way) that you do not need to remove the tank to renew  this hose!

Waldi

754F8369-741C-4841-A359-A6725F5F708E.jpeg

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Hello Waldi,

Many thanks for posting your latest update. As mentioned above, my next step was going to be to change the Bosch pump to PRV hose to Cohline 2240 hose. I have been struggling to source the necessary hose end fittings and also due to other non TR5 stuff in my life it has stalled. However, I am most interested to hear that changing the filler neck hose has made a big difference. My history file contains a Moss Europe receipt for hose 650279, which was fitted by a previous owner seven years ago. This hose has a green band on it too but I have no idea what the specification is as there is nothing on the Moss website. I shall go ahead and source the hose you used from Revington TR and give it a try. 

Regards,

Denis

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I had the petrol smell problem in the boot of my 4A. As there are no fuel pump components in the boot like the TR6, I fairly quickly identified the problem as the filler hose. Replaced that and the smell disappeared. And yes, you can replace it without removing the tank. 

Seeing the Mackay Rubber brand reminds me - some years ago, I ordered a set of radiator hoses from one of the UK TR specialists. When they arrived, they had the Mackay brand and Made in Australia stickers on them. They were made a few miles up the road…….

Edited by Rockie51
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  • 2 weeks later...

Good evening all got the same broblen of strong smell of petrol in boot new aluminium tank Bosch pump all new hoses checked all components with baby powder just need help to solve the broblen thanks billy 

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Hi Billy,

There are lots of good suggestions in this thread if you go back through it. I have just changed the filler neck hose to the Revington TR part as recommended by Waldi. It is early days but I believe that it has made a difference. I am currently airing the boot area to get rid of any engrained petrol smell.   

Regards,

Denis

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Hi Billy,

as Dennis says above, lots of good info in this thread. The smell from lower grade hoses (like R6 or R7), or even worse: without any specification, they all contribute. My boot is almost smell-free. 

SAEJ30 R9 for the lower pressure hoses (Cohline 2134 has a wide range of diameters) and SAE J30 R14 (Gates Barricade 225 PSI rated hose) for the high pressure hoses.

Cheers,
Waldi

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