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Gas Smell Volvo 850 GLT

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
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

mecheng
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Year and Model: 1998 Volvo S70 T5
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Re: Gas Smell Volvo 850 GLT

Post by mecheng » Fri Feb 07, 2020 4:05 pm

abscate wrote:
Fri Feb 07, 2020 3:01 pm
I’ve got a 1998 gas tank out if any pictures are needed
That would be lovely to say the least.
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

rguzz
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Year and Model: 1996 850 turbo
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Re: Gas Smell Volvo 850 GLT

Post by rguzz » Sun Feb 09, 2020 8:39 pm

Where outside is the smell the strongest? Rollover valve is right rear.

mecheng
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mecheng

Re: Gas Smell Volvo 850 GLT

Post by mecheng » Mon Feb 10, 2020 2:19 pm

erikv11 wrote:
Fri Feb 07, 2020 1:52 pm
mecheng wrote:
Fri Feb 07, 2020 6:49 am
... Does the gasket on the fuel pump seal go bad or is it mainly the hose? ...
Yes, yes yes yes on the gasket. I've had that fix a gas leak at least twice. They get hard and seal poorly or even crack.

By far the way to go is to pull the cover on the fuel pump and try to get an eyeball on the leak, I'd keep pushing that. And look up from under the car etc.

I don't think the "wax" coating on the wire entry port actually leads to fuel leakage, but rather it breaks down and crumbles away either with age or when there is a leak causing gas to pool up on top of it.

Rollover valve is right by the fuel filter: viewtopic.php?f=1&t=70426
I looked at it, I don't see any leaks but maybe its enough so that vapor escapes but I have to pour some fuel in while I look at the top of the fuel pump, nothing is leaking from the tank neck.

What about the seal on the fuel sending unit?
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

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erikv11
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erikv11

Re: Gas Smell Volvo 850 GLT

Post by erikv11 » Tue Feb 11, 2020 9:04 am

I've not heard of the sending unit seal leaking, and for me the only time I have ever touched a sending unit is when I harvested the one from a parts car. But makes sense to suspect it.
'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, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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