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Volvo S80 Fuel Leak

8 messages,  Last post on Jan 15, 2009 at 6:50 PM

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#3 of 8 Re: Fuel leak, need to remove rear seat to investigate [JuaKali] by mickjoebill Jan 12, 2009 (7:53 am)
Replying to: JuaKali (Jan 10, 2009 11:13 pm) Thanks!   I assumed that Ide be able to see the filler pipe entry form this port. I'll do more investigation before removing the seat. From what you say it sounds like I'll have to drop the tank to see the problem?   If i have to pull the tank out would it be a good idea to replace the fuel pump, car has done 86k kilos.   A side note, does the bottom part of the rear seat simply pullup? I've given it a hefty/tug /pull/ jolt from the font edge but haven't managed to unclip it. I can prise the rear part of the bottom seat from under the backrest but cant get the front part to budge...   cheers   Mickjoebill Replies to this message: JuaKali (Jan 12, 2009 7:53 pm)
#4 of 8 Re: Fuel leak, need to remove rear seat to investigate [mickjoebill] by JuaKali Jan 12, 2009 (7:53 pm)
Replying to: mickjoebill (Jan 12, 2009 7:53 am) The clips that hold the seat bottom in place are about a foot in from the edge (would be between your legs if seated) of the seat. If you lift the corner up and look (flash light) you should be able to see them. It takes a fair amount of force to disconnect them. Hold on to the seat on either side of the tabs (tab between) and yank straight up.   You may have a crack or fracture on one of the lines leading in/out of the tank - the supply and return lines connect to the pump here. This is not uncommon. I would recommend opening the port and observing the connections with the engine running or while cycling the ignition switch on-off-on-off this activates the pump each time you switch on. Outright pump failure is not very common. I have come across one at 146K MILES. Mostly the plastic connections at the tank (part of pump) break. If this occurs, you have to replace the pump unit - this also comprises a fuel level sending unit. It is quite expensive about $ 400 at dealers + a few $ for a new o-ring gasket and screw ring if you have to destroy to remove - (cheaper than buying $100 tool). Dropping the tank is a lot harder. Be carefull, keep all flame sources away Volvo flambe has serious side effects.   How much fuel is leaking?   Best of luck.
#5 of 8 only leaks whilst filling up... by mickjoebill Jan 12, 2009 (10:11 pm)
Fuel only leaks when we are at the petrol pump filling up. When we stop filling the flow of petrol onto ground stops. It is a considerable amount about half as much as the amount when pouring a cup of coffee!   Once port under seat is removes can we see the joint of fuel filler and tank? as it makes sense there is a break at this point   thanks!!   Mickjoebill
#6 of 8 by mickjoebill Jan 12, 2009 (11:23 pm)
The rate of flow is 1/2 that of typical coffee or tea pot.   Mickjoebill
#7 of 8 next question! by mickjoebill Jan 13, 2009 (8:27 am)
OK removed the seat and inspection covers. Unfortunately can't see the fuel filler line from these vantage points.   Next question, how is the fuel filler line attached to the tank?   Which side of the car does the filler hose meet the tank? Looks like the tank has to come out to refit the hose? How many hours work for this, could a non volvo garage do it? I have a RHD vehicle.   cheers   Mickjoebill Replies to this message: mickjoebill (Jan 15, 2009 6:50 pm)
#8 of 8 Leak found] by mickjoebill Jan 15, 2009 (6:50 pm)
Replying to: mickjoebill (Jan 13, 2009 8:27 am) Found the leak, it is in the joint of the filler hose and the tank.   Mickjoebill

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