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Changed gas tank bleeder valve, now it won't fill!


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In the "If it ain't broke" category.  :oops: 

Symptoms:

Hard start when warm, after sitting for 15 minutes or so; intermittent Coke bottle sound (low whistle) at low speed. No problems fuelling car.

 

Attempted solution:

Changed bleeder valve, also known as fuel tank ventilation valve 99620114301. This valve is not electric but mechanical. The gas cap, when closed tightly, pushes a little piston which opens the valve to recirculate the vapours.

 

Result:

Can't put gas in the car! Takes about a litre then spits it back out at me!

 

Okay, so I have obviously :censored:  up royally here. So I tried putting back the old part. Nope. Poked my finger in the filler flap: No click (should there be one?). Checked the E6 fuse. Seems okay. Could it be another valve/switch  or what? And what have I done to cause this, aside from fixing something that wasn't broke? 

 

2001 Boxster S tip

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In the "If it ain't broke" category.  :oops: 

Symptoms:

Hard start when warm, after sitting for 15 minutes or so; intermittent Coke bottle sound (low whistle) at low speed. No problems fuelling car.

 

Attempted solution:

Changed bleeder valve, also known as fuel tank ventilation valve 99620114301. This valve is not electric but mechanical. The gas cap, when closed tightly, pushes a little piston which opens the valve to recirculate the vapours.

 

Result:

Can't put gas in the car! Takes about a litre then spits it back out at me!

 

Okay, so I have obviously :censored:  up royally here. So I tried putting back the old part. Nope. Poked my finger in the filler flap: No click (should there be one?). Checked the E6 fuse. Seems okay. Could it be another valve/switch  or what? And what have I done to cause this, aside from fixing something that wasn't broke? 

 

2001 Boxster S tip

 

 

Check fuse E6, and then read this: http://www.renntech.org/forums/files/getdownload/87-94boxster-fuel-tank-hose-modificationpdf/

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Yes, E6 was one of the first things I checked. Should I not hear a click when I push on the filler tube flap?

I have also read theTSB. While this is a possibility, it seems a bit too coincidental that this should happen exactly at the same time that I changed the valve. If it turns out to be this, at least it's a cheap fix.

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Yes, E6 was one of the first things I checked. Should I not hear a click when I push on the filler tube flap?

I have also read theTSB. While this is a possibility, it seems a bit too coincidental that this should happen exactly at the same time that I changed the valve. If it turns out to be this, at least it's a cheap fix.

 

You may or may not hear a "click" as it is often faint.

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Thanks to Gelbster in the 986 forum for pointing me to this post by Dale_K in the Pelican forum. In fact, it was the magnetic switch which was not inserted into the space provided for it in the valve. It had fallen out when I pulled the old valve but I didn't notice. I did see it but couldn't find any information on it until I saw this post

 

If this unit isn't working you'll have trouble filling. Also the magnetic switch. A new one comes with a new vent valve.

ventunit001.jpg

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  • 4 weeks later...

Machster, this is the switch you need.

Thanks to Gelbster in the 986 forum for pointing me to this post by Dale_K in the Pelican forum. In fact, it was the magnetic switch which was not inserted into the space provided for it in the valve. It had fallen out when I pulled the old valve but I didn't notice. I [/size]did see it but couldn't find any information on it until I saw this post[/size]

 

If this unit isn't working you'll have trouble filling. Also the magnetic switch. A new one comes with a new vent valve.[/size]ventunit001.jpg

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  • 5 years later...

Bless you for this post!

 

i had disconnected the filler assembly to replace the a/c return line. Like you, I found the coincidence of failure too unlikely.

 

the mag switch is poorly documented and probably sells a lot of replacement valves...

regards & thanks!

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