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Petrol whiff around rear of vehicle #1647304
16/12/2020 21:33
16/12/2020 21:33
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
Club Member 1862
On a journey

Joined: Dec 2019
Posts: 141
Milton Keynes
I always seem to get a petrol like smell around the rear. No obvious leaks and the fuel tank remains pressurised. Any ideas?


KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647310
17/12/2020 06:38
17/12/2020 06:38
Joined: Jun 2007
Posts: 4,514
Malaysia..Glasgow at heart
Kelv27 Offline
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Kelv27  Offline
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Posts: 4,514
Malaysia..Glasgow at heart
Check the rubber seal on the top of the fuel pump carrier for cracks.



Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647314
17/12/2020 08:53
17/12/2020 08:53
Joined: Aug 2017
Posts: 323
Camberley, Surrey
J
jonnyboy54321 Offline
Making a profit
jonnyboy54321  Offline
Making a profit
J

Joined: Aug 2017
Posts: 323
Camberley, Surrey
tank cap seal?


Always seem to have too many 20VT's to count......
Re: Petrol whiff around rear of vehicle [Re: jonnyboy54321] #1647315
17/12/2020 09:44
17/12/2020 09:44
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
Club Member 1862
On a journey

Joined: Dec 2019
Posts: 141
Milton Keynes
I replaced the cap seal. No difference. It holds pressure also.


KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: Kelv27] #1647316
17/12/2020 09:44
17/12/2020 09:44
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
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On a journey

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Posts: 141
Milton Keynes
Kelv. Where is this exactly thanks?

Last edited by KevinW; 17/12/2020 09:45.

KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647322
17/12/2020 12:45
17/12/2020 12:45
Joined: Feb 2019
Posts: 193
Free State of Jones
clanger Offline
On a journey
clanger  Offline
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Free State of Jones
Not Kelv but I don't think he will mind.

Lift boot carpet, back right in boot floor there is a round black plastic cover secured by 3 (iirc) small screws, remove this cover which exposes access to the fuel pump. You can then inspect the seal that Kelv refers to.


E85
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647323
17/12/2020 13:07
17/12/2020 13:07
Joined: Jul 2007
Posts: 497
S Wales
Morrison Offline
Club member 1566
Morrison  Offline
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Enjoying the ride

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Posts: 497
S Wales
Fuel filter? Above plastic cover that is just Infront of driver side rear wheel

Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647325
17/12/2020 14:37
17/12/2020 14:37
Joined: Feb 2019
Posts: 193
Free State of Jones
clanger Offline
On a journey
clanger  Offline
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Posts: 193
Free State of Jones
The fuel supply line stays pressurized when engine off by non return valve in pump all the way through to the injectors. You can rule out fuel line leaks from pump hose connection through filter and all the way to injectors (unless your injectors are leaking) by difficult warm starting after a long run - a reduction in fuel line pressure causes the petrol to vaporize in the lines under the bonnet when hot. Unless you have this problem, my money is on Kelvs suggestion.


E85
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647343
18/12/2020 02:57
18/12/2020 02:57
Joined: Jun 2007
Posts: 4,514
Malaysia..Glasgow at heart
Kelv27 Offline
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Kelv27  Offline
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Posts: 4,514
Malaysia..Glasgow at heart
Thanks for filling in for me Clanger smile

Kevin, the rubber seal is as seen in this picture.. the black ring at the top..
Pic



Re: Petrol whiff around rear of vehicle [Re: Kelv27] #1647346
18/12/2020 10:57
18/12/2020 10:57
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
Club Member 1862
On a journey

Joined: Dec 2019
Posts: 141
Milton Keynes
Thanks guys. Took the panel off and there is definitely a whiff around the fuel pump so that look like the issue. No obvious leaks but probably the issue then. Will get a new seal before I dismantle! Is it easy to change. I assume just unplug everything, unscrew the top and stretch it over?

Last edited by KevinW; 18/12/2020 11:06.

KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647347
18/12/2020 11:11
18/12/2020 11:11
Joined: Mar 2007
Posts: 13,202
Auld Reekie
Edinburgh Offline
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Auld Reekie
Kevin, have a close look at the plastic unions on top of the fuelpump assembly - the pastic gets brittle with age and there have been several cases of these cracking or even shearing when disconnecting the lines


BumbleBee back:)
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647354
18/12/2020 15:34
18/12/2020 15:34
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
Club Member 1862
On a journey

Joined: Dec 2019
Posts: 141
Milton Keynes
OK. Had a look but nothing obvious. I could take the pipes off but may cause more damage. To be honest I don't thing I will bother fixing it as it isnt too bad. No signs of fluid and it seems you need a special tool to get the top ring off? If it was a simple fix I would do it.


KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647357
18/12/2020 15:58
18/12/2020 15:58
Joined: Jun 2007
Posts: 997
Carlisle
Rob40 Offline
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Carlisle
It just unscrews, shouldn't be any tighter than hand-tight. You might be able to readjust the rubber ring for a better seal.


This is how it should have come out of Torino!
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1647358
18/12/2020 16:25
18/12/2020 16:25
Joined: Jun 2007
Posts: 4,514
Malaysia..Glasgow at heart
Kelv27 Offline
Forum is my job
Kelv27  Offline
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Malaysia..Glasgow at heart
Originally Posted by KevinW
OK. Had a look but nothing obvious. I could take the pipes off but may cause more damage. To be honest I don't thing I will bother fixing it as it isnt too bad. No signs of fluid and it seems you need a special tool to get the top ring off? If it was a simple fix I would do it.


It is certainly a job you can undertake yourself..just be careful when disconnecting the hoses from the nozzle and avoid excessive force. As Edinburgh mentioned, they can be brittle.

If you are struggling to release the locking ring by hand as mentioned by Rob40, then you could use a large flat bladed screwdriver and hammer to ‘chisel’ the ring loose. Wrap the tip of the screwdriver with a piece of cloth to avoid knicking the plastic ring.



Re: Petrol whiff around rear of vehicle [Re: KevinW] #1652789
03/09/2021 14:56
03/09/2021 14:56
Joined: Dec 2019
Posts: 141
Milton Keynes
KevinW Offline OP
Club Member 1862
KevinW  Offline OP
Club Member 1862
On a journey

Joined: Dec 2019
Posts: 141
Milton Keynes
Finally sorted this. It turns out it was just the plastic fuel can that I store in my garage quite close to the filler side of the car...Doh!. Plastic fuel cans always smell of petrol I find as some must be escaping through the walls. All sorted now - changed it to a metal one!


KevinW
Milton Keynes UK
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1652794
03/09/2021 16:22
03/09/2021 16:22
Joined: Mar 2007
Posts: 13,202
Auld Reekie
Edinburgh Offline
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Auld Reekie
That has to rank as the most labour-intensive non-fix ever undertaken on a coupé laugh


BumbleBee back:)
Re: Petrol whiff around rear of vehicle [Re: KevinW] #1652796
03/09/2021 16:37
03/09/2021 16:37
Joined: Sep 2006
Posts: 15,791
FCSS 01684 593187
Countrycruising Offline
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Originally Posted by KevinW
Finally sorted this. It turns out it was just the plastic fuel can that I store in my garage quite close to the filler side of the car...Doh!. Plastic fuel cans always smell of petrol I find as some must be escaping through the walls. All sorted now - changed it to a metal one!


laugh

Re: Petrol whiff around rear of vehicle [Re: KevinW] #1652832
08/09/2021 16:59
08/09/2021 16:59
Joined: Jun 2007
Posts: 691
Dorchester
R
respace Offline
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respace  Offline
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R

Joined: Jun 2007
Posts: 691
Dorchester
This should have a "How to", 1st dismantle the whole car, reassemble, then move the petrol can next to the car, buy new petrol can.


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