ClubCalibra | Guide to Petrol Smells in the Cabin
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Offline ClubCalibra

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Guide to Petrol Smells in the Cabin
« on: May 09, 2006, 20:48:34 PM »
Smell of Petrol in Cabin

Fuel Tank Pressure - All the fuel injection systems on calibras require a pressurised fuel tank to maintain fuel line pressure and smooth running. (and to prevent the whole car stinking of petrol.) The problem comes from the design of the filler neck.

Make sure the gold ring at the top of the filler neck is air tight against the filler neck by taking the whole lot apart. Check the condition of the rubber o-ring and replace/refit as necessary.
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Offline keef

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Re: Guide to Petrol Smells in the Cabin
« Reply #1 on: May 12, 2006, 17:49:14 PM »
Please don't forget the injector rail fuel hoses. They run from the rear left bulkhead adjacent to the brake fluid reservoir to both ends of the injector rail. They do perish and are prone to going around the hose clamps and the throttle body hose clamp. Relatively cheap to replace. I used Pirtek a national hose making company, they cost five pounds fifty, in braided fuel hose, each.

This is also a cause of a strong smell of fuel in the cabin
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dj_smurph

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Re: Guide to Petrol Smells in the Cabin
« Reply #2 on: May 13, 2006, 08:25:59 AM »
also if the car has been lowered to steering arms can catch the pipes as welll
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Manfred

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Re: Guide to Petrol Smells in the Cabin
« Reply #3 on: May 13, 2006, 11:34:27 AM »
Hi,

Pressurized fuel tank? What have you been smoking?

Manfred
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Slammed_DTM

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Re: Guide to Petrol Smells in the Cabin
« Reply #4 on: May 13, 2006, 12:54:34 PM »
Fuel gets pulled out the tank via the pumps and pushed up to the fuel rail.
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Offline keef

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Re: Guide to Petrol Smells in the Cabin
« Reply #5 on: May 13, 2006, 14:22:26 PM »
It's not at atmospheric pressure is it manfred.

It is pumped, pressure increases, velocity decreases. Bernoulli's eqation is good at explaining this it also explains syphoning and the venturi effect quite well. 

So a good air tight seal is important.

This link is interesting reading:

http://home.earthlink.net/~mmc1919/venturi.html

Hope that helps.
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Manfred

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Re: Guide to Petrol Smells in the Cabin
« Reply #6 on: May 15, 2006, 18:34:45 PM »
Hi,

The fuel tank is sucked vacuum by the fuel pump. To prevent the tank collapsing they vent it to atmosphere through a carbon cannister and - on some models - a motorized valve to reduce emissions (during testing, anyway).

If you smell fuel in the cabin it's coming from the engine bay, not from the rear of the car.

Most likely causes are fuel leaks due to ruptures, breaks or sporadic leaks on conical connectors (happens often on the V6) - If it's an intermittant leak, you will likely smell fuel vapors after hard braking or accelerating.

You can have a bad seal on the filler cap and in that case you will smell fuel if you stick your nose near it, but that smell will not be apparent in the cabin, especially not while driving.

Manfred
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Offline lee

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Re: Guide to Petrol Smells in the Cabin
« Reply #7 on: June 05, 2006, 19:37:37 PM »
wen i jigged my cally last year it cracked al the petrol pipes under the car!
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calibra_si

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Re: Guide to Petrol Smells in the Cabin
« Reply #8 on: January 25, 2007, 12:29:56 PM »
hey ,
 i jus had this problem and it was a rusted pipe that was spraying petrol out of my tank to the equivelant of a deoderant can spraying,
i was told that if someone had pung a fag under my car when it was running then they would have had to put the flames out on my back, i had star radiatiors in govan to fabricate me a new part, top job from the guys in star radiatiors ;-)
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calibra_si

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Re: Guide to Petrol Smells in the Cabin
« Reply #9 on: January 25, 2007, 12:31:52 PM »
i just noticed that my pic is a healthy blonde chick , I'M NOT BTW. i'm  15 stone guy from paisley and god knows where that pic came from ;') jus so you's know !!
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Offline redgriffen

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Re: Guide to Petrol Smells in the Cabin
« Reply #10 on: January 25, 2007, 12:42:04 PM »
I lived in Paisley and know the truth................... ....
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calibra_si

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Re: Guide to Petrol Smells in the Cabin
« Reply #11 on: January 26, 2007, 15:43:45 PM »
lol, damb i should really stop wearing that wig
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SMURF42

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Re: Guide to Petrol Smells in the Cabin
« Reply #12 on: January 31, 2007, 16:41:41 PM »
Out of the 5 callys that ive had 4 of them have had fuel leaks where the pipes join the fuel rail . Bit dodgy when you think the alternator is under there
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schitzkin

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Re: Guide to Petrol Smells in the Cabin
« Reply #13 on: October 28, 2007, 16:48:45 PM »
I have the same problem but I only smell fuel when I'm really low on it bout tenners worth. If i put my fut down it's worse.  Nothing comes out underneath her and I cant smell it when shes full either.  Get it checked out?
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Offline Andrew

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Re: Guide to Petrol Smells in the Cabin
« Reply #14 on: October 28, 2007, 19:38:32 PM »
Same problem, ive just had to replace the pipes that join the fuel rail, it absolutley stank in the cabin of fuel before this, worse on startup and heavy accelerating, I said a little prayer every time I lit a tab up!
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Offline scorp256

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Re: Guide to Petrol Smells in the Cabin
« Reply #15 on: June 14, 2009, 13:10:39 PM »
Ive got the same problem but i had a quote for about £145 for a new pipe from
carspares and it comes as a one piece from tank to rail.
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Offline calibra_steve

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Re: Guide to Petrol Smells in the Cabin
« Reply #16 on: August 24, 2009, 21:40:58 PM »
Quote from: dj_smurph on May 13, 2006, 08:25:59 AM
also if the car has been lowered to steering arms can catch the pipes as welll
would this cause the steering to stick slightly like its getting caught but only when you turn right??
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Offline Gobbles

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Re: Guide to Petrol Smells in the Cabin
« Reply #17 on: December 03, 2009, 12:14:02 PM »
I'm new to this so I'm not sure exactly what I'm looking for. My cabin has fumes in it if I turn on the blowers and my exhaust is definately ok. Anyone got any pics? Or how much for a garage to sort? I really don't fancy touching anything fuel related......
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Offline Trigger

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Re: Guide to Petrol Smells in the Cabin
« Reply #18 on: December 03, 2009, 12:17:24 PM »
Quote from: Gobbles on December 03, 2009, 12:14:02 PM
I'm new to this so I'm not sure exactly what I'm looking for. My cabin has fumes in it if I turn on the blowers and my exhaust is definately ok. Anyone got any pics? Or how much for a garage to sort? I really don't fancy touching anything fuel related......

Gobbles if you can't find your answer on the site or by using the search facility then start a new thread in Technical Troubleshooting outling your issues.
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