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The mkiv Supra Owners Club

Fuel Smell - Check what first?


caseys

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Hi Peeps,

 

I've read the various topics on the forums about strong fuel smell. Unfortunately I seem to be getting a strong fuel smell either when being at too lower revs i.e going up a hill in 4th gear at 25-30mph or while cornering pretty hard but mostly when I come to a stop at a set of lights etc. Also the smell seems to be only really noticeable when I have the windows down (either or both) and gets really strong when I'm down to about 1/4 of a tank of fuel or less.

 

I'm not getting any strange smoke out of the exhaust when hot or cold nor is there any fuel smell in the engine bay when running hot or cold or when revving. Haven't yet checked under the car.

 

I've had the smell since I had the car (Apr '03) and didn't think much of it since it didn't seem to be eminating from the engine bay. Also reading the posts I don't get any hiss when opening the fuel cap. Maybe it could be the charcoal filter?

 

Please can anyone advise what I should check first before starting to pull the car apart as it's been really ****ing me off and I need to pull my finger out and do something about it :rolleyes: Anyone that finds the root cause of this problem will be my personal hero :)

 

The car's a j-Spec NA Manual, still has both cats and only mods are brakes and a HKS hi-power exhaust but the smell was there prior to fitting that. Engine's completely stock and runs fine, never lagged or felt lumpy. So I'm kinda at a loss to what it is. Getting about 250-280 miles to a full tank depending on how I drive.

 

Cheers,

 

Si

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It could be part of your emissions stuff that's got a hose off or is leaking in some fashion? The Evap system is kinda complex in the way it decides when to store, vent, or recycle fumes so stationary with no engine load it may not open up the part of the system that has the problem...

 

-Ian

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i had this prob a few weeks back, also noticed a drop in mpg.

i got a new cap from mrT about £23 no more smell and a slight increase in mpg :)

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