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Old 17-05-2016, 06:35 PM   #1
remow57
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Default pertol seeping from filler cap keyslot

Hi,everyone,and thanks for your time.I was wondering
If you could help me out with a niggling problem.
My petrol seems to be seeping out of the filler cap when driving.
It only appears to be coming from the slot where the key is inserted.
When checking it after a drive I can see the splash down the rear fender.
This happens regardles of wether the tank is full or quarter full.
I have replaced the cap with new one but still same problem.
I have the long tank installed behind back seat in boot.
The car is a Ford escort mk2 1978 model.
Any advice would be appreciated.
Thank you.
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Old 17-05-2016, 08:33 PM   #2
Rallye Sport
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Default Re: pertol seeping from filler cap keyslot

Has the tank got a breather? is it working?
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Old 17-05-2016, 10:05 PM   #3
remow57
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Default Re: pertol seeping from filler cap keyslot

I'm not sure.there are 2 pipes at sender unit.
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Old 17-05-2016, 10:08 PM   #4
remow57
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Default Re: pertol seeping from filler cap keyslot

Where would the breather be situated?
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Old 18-05-2016, 08:03 PM   #5
Rallye Sport
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Default Re: pertol seeping from filler cap keyslot

When you say its behind the seat is it one of the alloy rally types from the UK? Haven't dealt with them before... One of the pipes at the sender should be for a return line, plumb that up to the carbon canister and it should help the tank breathe... If the fuels coming out when your cornering sounds like the tank needs baffles fitted...
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Mk1 GT Cortina Project.
FG XR50 Daily.
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Old 18-05-2016, 08:24 PM   #6
remow57
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Default Re: pertol seeping from filler cap keyslot

Quote:
Originally Posted by Rallye Sport View Post
When you say its behind the seat is it one of the alloy rally types from the UK? Haven't dealt with them before... One of the pipes at the sender should be for a return line, plumb that up to the carbon canister and it should help the tank breathe... If the fuels coming out when your cornering sounds like the tank needs baffles fitted...
Thanks for gettin back.It is a long alloy tank fitted in the boot ,behind rear seat.As for cornering,I ruled that out ,cause I got from work this mornin and parked on level surface.I opened the cap and actually saw the fuel drain back from the filler mouth!The fuel return? pipe is blocked off with a pipe n bolt,got the car this way.I don't see any way that the tank is breathing?I think pretty much its building up pressure with no release.What are my options?And is the carbon canister the little blue box hidden above the fuel pump?
Thanks so much,lookin forward to ur reply.
Would be great if I could hav emailed you.
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Old 18-05-2016, 09:32 PM   #7
Rallye Sport
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Default Re: pertol seeping from filler cap keyslot

Carbon canister is a round black container located passenger side firewall in the engine bay... Alot of them get pulled out over the years so it may be gone...
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Old 10-06-2016, 12:03 AM   #8
remow57
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Default Re: pertol seeping from filler cap keyslot

I don't know where the breather would be situated?sorry for very late reply
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