redsunbeam
Part of things
I can't hear you .............
Posts: 136
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The recent hot weather has highlighted the fact that the rovers fuel tank vents straight to atmosphere. It has a vent out of the top through a coil of pipe and out through the boot floor. The garage smells of petrol in the hot weather. I've never noticed this with a modern car in the garage - how are modern fuel tanks vented?
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They vent into a charcoal cannister which absorbs the fuel. It's then fed into the engine when it can accept it - usually while cruising.
It's a complex system that would be hard to transplant, unless you move the whole lot over along with the stock engine management - I've not read your thread in a while so I can't recall if your Lexus engine is on the sotck ECU or not. If so it may be possible to swap over the comlete evaporative emissions system.
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Jul 27, 2012 22:49:40 GMT
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as above, they are generally vented to the inlet through a charcoal doodaa, but for various reasons the last dozen or so vehicles I've owned have ended up with the charcoal affair not plumbed into the inlet and just left with the pipe open to the atmosphere and none of them have smelled of fuel even when garaged.
If the fuel smell is definitely from the tank expansion rather than a slight leak, I bet if you stuck a charcoal canister on the end of the pipe it would absorb the fuel smell for many months before it became a problem.
You could possibly plumb it into the inlet, but as it's an "air leak" it would be hard to manage, hence why modern vehicles have it on a valve that opens up when the vehicle is in cruise so there is a decent vacuum but also a good amount of airflow so that the added airflow is barely noticeable.
Perhaps with an inline tap you could regulate the flow so that it would only allow a tiny bit of air through so it wouldn't mess up your idle but still purge the charcoal sufficiently.
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redsunbeam
Part of things
I can't hear you .............
Posts: 136
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Thanks for the info. After a wander around the lexus forum, it appears my engine still has the vapour control valve on it that is controlled by the ecu so i just need a charcoal canister and a length of 6mm pipe. RESULT!
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