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4th December 2020, 09:20 | #1 |
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Petrol smell outside the car with a full tank
Hi all,
My 2004 1.8 NA ZT has started to smell strongly of petrol when standing outside it. Only happens when the car has a full tank and dies down when it has dropped a bit. No obvious leaks underneath. Is there a known issue or likely cause? |
4th December 2020, 09:26 | #2 |
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Have you checked the seal on your filler cap?
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4th December 2020, 09:30 | #3 |
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If you unclip the rear seat base there are two panels under it. Remove those and there are two modules that sit in the tank - one is the pump and the other the filter. They are kept in place by two large locking rings and it's not unknown for the seals to leak if they haven't been fitted correctly.
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4th December 2020, 10:50 | #4 |
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That happened on my 2005 diesel ZT. Previous owner had replaced the in tank pump and not fitted the seal totally square meaning the locking ring didn't screw down far enough. Every time I filled up with a full tank or after a spot of vigorous cornering, my driveway got a nice coating of diesel.
Seat up, panels off, reseated the seal, locking rings screwed down. Now the only dampness on the drive, apart from the British weather, is a weepy power steering pipe.
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4th December 2020, 10:57 | #5 |
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How To - Fuel Filter and Seals: https://www.the75andztclub.co.uk/for...ead.php?t=9108
Note specific advice on the placement of the fuel tank port seal. That's always the cause of petrol leaks. WIn the susceptible models, tank leakage typically follows the fitting of the Fabled Orange Clip (FOC) or through messing with the fuel gauge floats. TC |
4th December 2020, 12:27 | #6 |
I really should get out more.......
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If the fuel was leaking past the pump or filter seals under the back seat would not the inside of the cab be reeking of petrol fumes
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4th December 2020, 15:57 | #7 |
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Could depend on how well the access covers are bolted down . If the seals are still in good nick and doing their job then possibly not. I certainly didn't notice any waft of diesel in the cabin when I had my leakage issue.
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4th December 2020, 16:59 | #8 |
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Most reports talk about petrol smells outside, especially around the rear wheel arches. Interestingly, the inside of the car isn't often mentioned. Interior smells appear to most often involve engine breathers. It could be down to vapour densities. Fuel vapours are denser than air, so when the car's stationary, the fumes are most likely to roll across the tank and fall downwards.
TC Last edited by T-Cut; 4th December 2020 at 17:01.. |
4th December 2020, 20:11 | #9 | |
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Quote:
Last edited by Mike Noc; 4th December 2020 at 22:47.. |
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4th December 2020, 23:04 | #10 |
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Hi Mike. You have highlighted a possible fault I have been mentioning for the last 3/4 years. Discovered this happening when I changed my in tank pump on the diesel. Not as bad as that though. A container of expanding foam sprayed towards the rear wheel arch cured it.
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