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Fuel fill was slow, now also have a fuel leak.

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Dan McBoost
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Fuel fill was slow, now also have a fuel leak.

Post by Dan McBoost » Wed Mar 16, 2016 7:58 am

The trip to and from VA went great last weekend, but during the trip fill ups were only possible very slowly. Last night I started smelling gas in and around the car. Today saw a spot near the right side, between the wheels.

I did search, but did not find matching symptoms.

I did not jack it up yet, but any info ahead of time will be greatly appreciated.
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abscate
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Re: Fuel fill was slow, now also have a fuel leak.

Post by abscate » Wed Mar 16, 2016 8:00 am

Check out Neals long thread on rear axle replacement on his 2000R. He has some nice photos of the top of the tank of this series for your reference.

I hope you don't have to drop the tank...ugh....is that new one here yet?

:-)

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Dan McBoost
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Re: Fuel fill was slow, now also have a fuel leak.

Post by Dan McBoost » Wed Mar 16, 2016 9:03 am

This topic shows a bunch.
http://www.matthewsvolvosite.com/forums ... 7&start=60

Or another?

Thanks again abscate.

new one? You mean the new car or new child? :) They are both here!

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Dan McBoost
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Re: Fuel fill was slow, now also have a fuel leak.

Post by Dan McBoost » Thu Mar 17, 2016 8:01 pm

was the right side elbow coming out of the sending unit at the front of the tank.

someone "repaired" it before. Quite half assed. I half assed it much much better.
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Re: Fuel fill was slow, now also have a fuel leak.

Post by scot850 » Fri Mar 18, 2016 10:46 am

Dropping the sub-frame is not something you want to do, but there are 2-3 possible contenders for the slow filling issue:

1) Regular over-filling/topping up after the cut-off I believe can cause the carbon can to get fuel into it slowing it's ability to breath air while filling slowing the process. Only way to possibly rectify it to remove the pipe to the roll over valve and the return pressure line and hope by running air through it you can clear some of the fuel out and allow the carbon to dry. Removing the filter or replacing it requires dropping the rear sub-frame as the removable holding bracket Volvo thought was a good idea to place at the front of the tank where you can't access it!

2) There is an air filter on most of the AWD breather pipes that is fitted near the top of the filler pipe. If you live in a damp or dusty area it is possible that this has clogged which prevents the air escaping while filling.

3) The roll-over valve has stuck which again acts to prevent air escaping up the pipe to the filter.

The last 2 can be replaced without dropping the rear sub-frame but access is difficult. The roll over valve is partially accessible from the access plat in the trunk.

Neil.
2000 V70 R - still being an endless PITA
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Dan McBoost
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Re: Fuel fill was slow, now also have a fuel leak.

Post by Dan McBoost » Mon Apr 11, 2016 8:09 pm

The leak was at the sending unit. A previous horrible back yard fix was leaking and was corrected with a very nice shop repair.
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