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leaking gas very urgent

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
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Mstrshkbrnnn
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leaking gas very urgent

Post by Mstrshkbrnnn »

So, I've owned my 96 r for about 3 months now, and I've noticed she is horrid on gas. I attributed that to my driving habits, and the fact that I haven't fully completed stage zero. Today I filled up my tank, and went home, and parked in my driveway (a steep incline), and sat in my car talking with the girlfriend for about ten minutes. When I got out I noticed a trail of water coming from underneath the car, and it didn't alarm me as I live in Seattle, and this is a regular occurrence. Then it hit me that it didn't rain today so I got nervous, and touched the wet patch of concrete and smelled my hand and it smelled like gas. I freaked out, and backed my car out of the driveway, and parked it on the street so that it would be on a level surface. I did the ultimate test to find out whether or not it was gas that was leaking, and held a lighter to the wet patch on the ground (after I moved the car), and sure enough it engulfed in flames. (it was kinda funny because my amazon delivery guy pulled up to my house, right as I lit my driveway on fire) anyway, it appears to be leaking from the filler neck/ gas tank connection. This is extremely concerning as I always notice wet spots under the car, but its never crossed my mind that I was leaking gas!! I need to take care of this ASAP because gas is NOT something I want to be leaking, especially since I daily this car. Any guidance will be GREATLY appreciated.
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'94 854 NA 287k (bought for $400)
'98 s70 GLT 243k (bought for $250 currently non running)
'96 854R 173K (bought for $900)
'88 245 DL who knows (bought for $600)
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misha
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Re: leaking gas very urgent

Post by misha »

I would say that it is leaking from the top of the tank...on fuel pump assembly rubber gasket.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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abscate
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Re: leaking gas very urgent

Post by abscate »

Search for a recent thread on dropping tank for repair. BlackBart Montana maybe?
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erikv11
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Re: leaking gas very urgent

Post by erikv11 »

First step go in through the fuel pump access hole and investigate. Hopefully it is just the rubber gasket at the top of the fuel pump i.e. replace it with a new one. Buy a Volvo branded gasket only for this one. This gasket fixes most of the leaks without any need to drop the tank. But if it doesn't then it's one of the hoses up there and you need to go back in through the fuel pump access hole and investigate some more ...
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'99 Camry V6 :shock: 130k
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volvolugnut
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Re: leaking gas very urgent

Post by volvolugnut »

Questions for other advisers: Do the 850's have a problem with the fuel pump flange cracking and leaking? Is this system similar to the P2 design with recall?
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2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.
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erikv11
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Re: leaking gas very urgent

Post by erikv11 »

Actually I have not heard of issues with any fuel pump flange on 850's.

There is a big circular nut (flange nut?) or collar, I wouldn't be surprised if those have indeed broken a few times as they can get pounded on pretty haphazardly in removal and install, but I haven't actually heard of any failures.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k
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Re: leaking gas very urgent

Post by matthew1 »

Much 850 fuel tank information. Good luck and let us know what you find.
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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
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crlande
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Re: leaking gas very urgent

Post by crlande »

Could be the filler neck retaining sleeve or the rubber seal under neath that.
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Clemens
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Re: leaking gas very urgent

Post by Clemens »

Just a general word of advice: if you have a car that old, it always pays off to inspect fluid stains under the car unless it is a hat day and the AC was on.
Also, it weirds oit people if you crawl on the floor licking and sniffing fluids...

As for the fuel leak: as others said, check the huge nut that holds the pump in place. I had a leak there after replacing my first furl pump and it always smelled like gas till I fully tightened it a while later.
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volvolugnut
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Re: leaking gas very urgent

Post by volvolugnut »

Good general troubleshooting info is to know the smell, color, etc. of all your cars fluids. Then you can determine what is leaking. Can't recommend the flame test. That is kinda funny, though.

volvolugnut
2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.
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