Fuel Tank Woes

DJ · Jul 5th, 2006, 21:22

Having acquired a nice clean H-reg 240GL (B200F with injection) which has had fitted a brand new fuel tank (the old one had parted at the rusted seams) I noticed that, initially, the gauge read full when the tank wasn't. I took it back to the garage after they had tinkered with it and it read completely empty.

Later in the journey it registered 2/3 fuel which was about right for the quantity in the tank. The gauge is stuck now showing full again- faulty sender or float?

I filled up completely for the first time tonight and petrol spewed out (possibly from the filler neck/pipe area) when the tank was full (the flow then stopped after around a gallon's spillage).

Would this be a problem with the filler pipe assembly- bad seal perhaps?

Any thoughts on the two problems (local independent garage with expertise in Volvos but no longer specialising exclusively)?

Mike_Brace · Jul 6th, 2006, 08:05

Sounds possibly electrical connection issue over level. The tank is one piece neck but could be breather pipes not connected properly. All in all sounds as if its an installation issue.

Mike

Clifford Pope · Jul 6th, 2006, 09:08

It's a one piece neck, but doesn't it clamp on to the tank itself at a join? Not noticeable if you are just removing and re-installing (just done that to mend a leak), but you'd need to undo it to fit a new tank.
The other thought is, did they damage or bend the sender float assembly while extracting and re-fitting? It's a pig to do, and when you've got it out it seems impossible to get back in.
How sound were the steel pipes emerging from the sender unit? They are notorious for developing pin-holes of rust, or collapsing completely when you try to get the rubber pipes off. Removal can be the final straw that sets it leaking.

DJ · Jul 6th, 2006, 12:42

Thanks, Clifford- food for thought there. The fuel was lost at a rate greater than I would have expected from breather pipe bore. The joint at the tank/filler would be more consistent with what I saw (by the way, there is a ring of sealant around the pipe (filler pipe can be viewed when side panel removed from floor in estate). The garage re-used the original sender unit, so there's scope failure there

Jul 5th, 2006, 21:22	#1
DJ VOC Member Last Online: Mar 7th, 2024 18:56 Join Date: Nov 2004 Location: Canterbury View Photos By: DJ	Fuel Tank Woes Having acquired a nice clean H-reg 240GL (B200F with injection) which has had fitted a brand new fuel tank (the old one had parted at the rusted seams) I noticed that, initially, the gauge read full when the tank wasn't. I took it back to the garage after they had tinkered with it and it read completely empty. Later in the journey it registered 2/3 fuel which was about right for the quantity in the tank. The gauge is stuck now showing full again- faulty sender or float? I filled up completely for the first time tonight and petrol spewed out (possibly from the filler neck/pipe area) when the tank was full (the flow then stopped after around a gallon's spillage). Would this be a problem with the filler pipe assembly- bad seal perhaps? Any thoughts on the two problems (local independent garage with expertise in Volvos but no longer specialising exclusively)?

Jul 6th, 2006, 08:05	#2
Mike_Brace Former contributor Last Online: May 15th, 2024 09:52 Join Date: Dec 2004 Location: Rhosgoch, Anglesey	Sounds possibly electrical connection issue over level. The tank is one piece neck but could be breather pipes not connected properly. All in all sounds as if its an installation issue. Mike __________________ A Volvo is for life not just for Christmas!

Jul 6th, 2006, 12:42	#4
DJ VOC Member Last Online: Mar 7th, 2024 18:56 Join Date: Nov 2004 Location: Canterbury View Photos By: DJ	Thanks, Clifford- food for thought there. The fuel was lost at a rate greater than I would have expected from breather pipe bore. The joint at the tank/filler would be more consistent with what I saw (by the way, there is a ring of sealant around the pipe (filler pipe can be viewed when side panel removed from floor in estate). The garage re-used the original sender unit, so there's scope failure there Last edited by DJ; Jul 6th, 2006 at 12:45.

Jul 6th, 2006, 09:08	#3
Clifford Pope Not an expert but ... Last Online: Today 17:17 Join Date: Dec 2001 Location: Boncath	It's a one piece neck, but doesn't it clamp on to the tank itself at a join? Not noticeable if you are just removing and re-installing (just done that to mend a leak), but you'd need to undo it to fit a new tank. The other thought is, did they damage or bend the sender float assembly while extracting and re-fitting? It's a pig to do, and when you've got it out it seems impossible to get back in. How sound were the steel pipes emerging from the sender unit? They are notorious for developing pin-holes of rust, or collapsing completely when you try to get the rubber pipes off. Removal can be the final straw that sets it leaking.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)