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850 Volvo Excessive Fuel ??

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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jeffs850
Posts: 4
Joined: 11 July 2017
Year and Model: 1994 Volvo 850 Wagon
Location: Portland , Oregon

850 Volvo Excessive Fuel ??

Post by jeffs850 »

I was told that the fuel pump was replaced 2 months ago , I just replaced the fuel pressure regulator and injectors and seals , plugs .. Seems like I can still smell fuel in the engine compartment , oil smells like gas has been introduced into engine . Reason guy got rid of the car was to much fuel ... Is this possible ?? Thinking it is , not sure what to do except do all the steps again .. Is it possible that the fuel pump that was put in is pumping to much ??? He stated that he wish he could have kept the pump for his race car .. But it is still in tank / stock location ... Thanks !!!! Any help is Appreciated .. :)

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misha
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Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
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Post by misha »

Nope....injectors are getting how much they need and the rest is going back into the tank via return line.
BUT,the engine might run rich,or injectors are leaking....that's why your oil smels like gas.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
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

jblackburn
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Post by jblackburn »

Investigate the EVAP system. Purge valve or cracked return lines.

The purge valve on my 98 is on the radiator shroud, with a thick line heading towards the canister at the rear of the car.

Some 850's have the EVAP canister tucked inside the left fender. Likely source of fuel vapors.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

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