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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 02-21-2012, 02:17 AM
Z3-Roadster Z3-Roadster is offline
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Location: California
 
Join Date: Feb 2012
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Mein Auto: 2001 BMW Z3 3.0
Z3 gas leak when pumping.

There's been a few times when I go to pump gas & I find a puddle of gas form beneath the gas cap. I haven't had time to check it out. I'm guessing something is loose or there might be a hole in plastic.

Has anyone experienced this?
Please provide any information you think will help.

Thanks
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  #2  
Old 02-21-2012, 05:07 AM
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Pinecone Pinecone is offline
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Location: Maryland
 
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Mein Auto: M Roadster/M3
On the ground or in the car?
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  #3  
Old 02-21-2012, 06:15 AM
dougmcintyre dougmcintyre is offline
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Location: Chapel Hill, NC
 
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Mein Auto: 2000 M Coupe, 1997 318ti
After the gas pump nozzle clicks off automatically, do you add additional gas?
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  #4  
Old 02-21-2012, 11:48 AM
Z3-Roadster Z3-Roadster is offline
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A puddle forms in the little area under the gas cap. No leak in or under the car.

& no. It happens at random whenever I put any amount of gas.
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  #5  
Old 02-21-2012, 12:09 PM
dadmog dadmog is offline
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Location: plano tx.
 
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Mein Auto: 98 MZ3
Are you sure that the liquid there is gas and not rain/wash water? Could be the drain hose below the gas cap area is plugged...run a thin wire or skewer through it and see if that solves the problem. Normally, gas overflow would go into the charcoal cannister.
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  #6  
Old 02-21-2012, 12:44 PM
dougmcintyre dougmcintyre is offline
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Location: Chapel Hill, NC
 
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Mein Auto: 2000 M Coupe, 1997 318ti
But, be gentle. I've read of people either ripping the drain hose or pushing the drain hose off.

Part of my car wash routine is checking and cleaning the gas cap area drain hole.
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  #7  
Old 02-21-2012, 05:06 PM
FredR FredR is offline
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Mein Auto: 96 BMW Z3, 97 BMW M3
I use string trimmer line to clear the drain line.
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  #8  
Old 02-21-2012, 07:01 PM
Z3-Roadster Z3-Roadster is offline
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Location: California
 
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Mein Auto: 2001 BMW Z3 3.0
It's not water that for sure. It's gasoline. It forms a puddle on the plastic charcoal color area under the gas cap. I think they're might be something loose or a small hole.
I'll check it tomorrow morning & give you an update.
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  #9  
Old 02-22-2012, 05:53 AM
dougmcintyre dougmcintyre is offline
formerly updmst
Location: Chapel Hill, NC
 
Join Date: Sep 2009
Posts: 674
Mein Auto: 2000 M Coupe, 1997 318ti
Is the car throwing any codes?

A loose gas cap will throw a code. So, anything loose or a small hole should also throw a code.

Also, the tank is one piece. Check out the pic at
http://www.realoem.com/bmw/showparts...05&hg=16&fg=05
Up at the gas cap, other than the gas cap itself, there is nothing to be loose.
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  #10  
Old 02-22-2012, 08:23 AM
tohbi tohbi is offline
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Location: arizona
 
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Mein Auto: z3 '97 atlanta blue 2.8
i keep getting an emissions code. it may be the gas cap. does anyone know where i can find a replacement gasket for the gas cap?

after 15 years the original is hard and cracked. i'm thinking this may be the reason for the code.
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  #11  
Old 02-22-2012, 10:31 AM
dougmcintyre dougmcintyre is offline
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Location: Chapel Hill, NC
 
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Mein Auto: 2000 M Coupe, 1997 318ti
Uhh, any BMW dealer?

bmwwpartzdirect.com sells the gasket for a $1.68 - http://www.trademotion.com/parts/ind...&siteid=214760

But with a MSRP of $2.10, why not splurge at your local dealer?
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  #12  
Old 02-23-2012, 09:08 AM
tohbi tohbi is offline
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Mein Auto: z3 '97 atlanta blue 2.8
thanks doug. i live in a small town in the middle of the howling desert, far from a dealer.

i went to the website and tried to order a gasket but the $1.68 went to $11.18 with shipping. there are some drawbacks to living in the howling desert.
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