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post #1 of 7 (permalink) Old 10-09-11, 09:05 AM Thread Starter
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leaking inbetween the rear wheels

Found leaking inbetween the rear wheels of my 99 Taurus. not sure what it is, smells like oil (engine oil? Gas? or Brake oil?), it happened right before I left to airport, :(. I have to call my friend to give me a ride.

any idea about what it is? I need to fix it after I come back from vacation.

position: in the center of the 2 rear wheels, seems like 2 leaking points
Left wheel ------ drop1 ---drop2-------- Right Wheel

Color: Dark
Smell: gas or engine oil

please help.

thanks

norna

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post #2 of 7 (permalink) Old 10-09-11, 09:20 AM
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Re: leaking inbetween the rear wheels

engine oil not likely that far back. fuel leak or brake fluid, but if it smells like gas, then it could be the tank or the line
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post #3 of 7 (permalink) Old 10-09-11, 11:50 AM
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Re: leaking inbetween the rear wheels

From what I've read, its more than likely a faulty fuel vapor valve allowing fuel to reach the charcoal canister.

Only vapors from the fuel tank are supposed to pass through this valve and on to be absorbed in the charcoal canister. When the valve fails, fuel can also pass through and enter the canister (especially when the tank is full) which will leak out onto the ground.

The valve is located on top of the tank and the canister is located under the trunk floor.

You need to have your mechanic verify this and correct the problem.
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post #4 of 7 (permalink) Old 10-12-11, 02:05 PM
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Re: leaking inbetween the rear wheels

Be sure to check the brake fluid level as well when you return. Brake fluid, petrol, and engine oil do have different smells. If you had your vehicle undersprayed, the fuel could leak on/over that and produce an oil like smell...

'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
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post #5 of 7 (permalink) Old 11-07-11, 10:37 AM Thread Starter
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Re: leaking inbetween the rear wheels

Thank you all for the replies.

I am back from my vacation. my car has been parked at driveway for a month.

I checked my car this morning, no problem to start up, no more leaking.
the Brake Fluide level is OK, Engine oil level is OK, Gas is almost full.

I can see the leaking fluide melt the asphalt of the driveway (two small holes at the leaking position).

I am wondering if it is because I added too much gas the day before my vacation, whcih caused an overflow?

thanks

Norva
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post #6 of 7 (permalink) Old 11-13-11, 06:08 AM
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Re: leaking inbetween the rear wheels

Too much fuel can cause a slow leak because the fuel return has to go back into the tank and the fuel filler tube is where the vapours generally escape that can't make it to the charcoal cannister for the engine to reuse (called exhaust gas recirculation or EGR). I'm sure you'll keep an eye on it and try not to overfill although I know I've done it on occasion to get that extra range but I didn't notice any problems!

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Originally Posted by norva View Post
Thank you all for the replies.

I am back from my vacation. my car has been parked at driveway for a month.

I checked my car this morning, no problem to start up, no more leaking.
the Brake Fluide level is OK, Engine oil level is OK, Gas is almost full.

I can see the leaking fluide melt the asphalt of the driveway (two small holes at the leaking position).

I am wondering if it is because I added too much gas the day before my vacation, whcih caused an overflow?

thanks

Norva

'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!
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post #7 of 7 (permalink) Old 11-19-11, 12:55 PM Thread Starter
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Re: leaking inbetween the rear wheels

Thank you all for the helps.

the leaking is gone now without doing anything, I think too much gas caused the leak.


thanks again


Norva
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