Topic: Slight petrol smell in cabin when driving, perhaps the carbon filter old ?? (Read 2741 times)

polilara · « **Reply #15 on:** 10 October 2011, 18:10:53 »

Thanks Kevin, I take off the plenum as soon as I have time. Have to change thermostat at the same time, (already purchased). I never have pressure in tank.

Do you think that the purge system is closed. There are actually three pipes, one coming from tank, one going to plenum and the third going nowhere. The third one is a loose rubber pipe. I quess it is some kind of emergency channel. If purge system does not work this pipe takes care of the pressure differences. This is just a quess - I really do not know.

I can recognise the smell only in the beginning of the journey, actually in the moment when the fun of the heater starts to rotate after a couple of minutes from start (auto control). Then the smell dissappears.

OK, I continue next with cleaning all the vacuum tubes as you advised.

Kevin Wood · « **Reply #16 on:** 10 October 2011, 18:16:01 »

I would be surprised if the purge system was the problem, to be honest. They are usually reliable. If the breather bridge turns out to be free of blockages, I would check the whole fuel system for leaks.

In particular, the plate under the boot floor where the pipes and wiring enter the fuel tank can rust and be prone to leaks.

Abiton · « **Reply #17 on:** 10 October 2011, 18:44:39 »

Quote from: polilara on 10 October 2011, 18:10:53

Thanks Kevin, I take off the plenum as soon as I have time. Have to change thermostat at the same time, (already purchased). I never have pressure in tank.

Do you think that the purge system is closed. There are actually three pipes, one coming from tank, one going to plenum and the third going nowhere. The third one is a loose rubber pipe. I quess it is some kind of emergency channel. If purge system does not work this pipe takes care of the pressure differences. This is just a quess - I really do not know.

I can recognise the smell only in the beginning of the journey, actually in the moment when the fun of the heater starts to rotate after a couple of minutes from start (auto control). Then the smell dissappears.

OK, I continue next with cleaning all the vacuum tubes as you advised.

The third pipe is presumably to allow fresh air into the carbon canister as/when it is being purged, and to equalise the pressure in the tank as the fuel level drops?
Presumably there's a one-way 'inward only' valve at this port of the canister? $:-\$

Have you got a picture of the carbon canister? Never seen one.

jb · « **Reply #18 on:** 10 October 2011, 21:30:07 »

buy a new petrol filler cap -- worked for me.

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Author Topic: Slight petrol smell in cabin when driving, perhaps the carbon filter old ?? (Read 2741 times)

polilara

Re: Slight petrol smell in cabin when driving, perhaps the carbon filter old ??

Kevin Wood

Re: Slight petrol smell in cabin when driving, perhaps the carbon filter old ??

Abiton

Re: Slight petrol smell in cabin when driving, perhaps the carbon filter old ??

jb

Re: Slight petrol smell in cabin when driving, perhaps the carbon filter old ??