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#2631336 - 11/25/12 08:27 PM Rich fuel smell
Josh_O Offline
Member

Registered: 08/16/12
Posts: 219
Loc: Palatine, IL
Hi everyone, i'm curious if this is normal. When I start my car every morning or evening when the car sits awhile I smell a very rich smell of gas. First off its an 06 P71 141k miles. Since i've had it for nearly 3 years I have been replacing parts. Is it normal? I would do a run down of everything I have replaced but the list is looooong! (maintenance items not just to fix this prob) So if you have a suggestion or a part let me know Ill let you know if I have replaced it yet. Thanks!
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#2631355 - 11/25/12 08:53 PM Re: Rich fuel smell [Re: Josh_O]
BigMerc96 Offline

I know nothing
Posting Addict

Registered: 06/05/10
Posts: 19868
Loc: I can see Detroit from here!
Its normal for the car to use a rich fuel mixture on a cold start in cold weather. Should lean back out to normal once it warms up.
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-Steve

2006 Audi A6 ~132k miles, stock.
1998 Mercury Grand Marquis LS HPP ~100k miles, slowly acquiring modifications.
1997 Town Car Cartier ~145k miles, Ported Plenum, Gutted Airbox, Contour E-fan Retrofit, Dual exhaust with Magnaflows, cats deleted, MSD Ignition, KYB Gas-A-Justs, P71 front bar, air ride reinstated, Projector retrofit, Caddy 4-note horn retrofit, Wood rim steering wheel retrofit, holistic weight reduction as the parts fall off..
1996 Mercury Grand Marquis GS 117,485mi. R.I.P. 7/14/12 frown

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#2631360 - 11/25/12 08:59 PM Re: Rich fuel smell [Re: Josh_O]
TerryConklin Offline
Rookie

Registered: 04/01/10
Posts: 64
Loc: Minnesota
Do you only smell the rich smell when you start it, or do you smell the general smell of fuel when you get near the car?
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1994 Lincoln Town Car Exec. - 126,000 miles - Coil spring conversion - Sony Xplod HD stereo deck
1988 Ford Ranger XLT - 2.3L I4

Gone but not forgotten:
- 1987 Mercury Grand Marquis
- 1997 Mercury Grand Marquis LS "The Great White Buffalo"

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#2631473 - 11/26/12 12:07 AM Re: Rich fuel smell [Re: BigMerc96]
Josh_O Offline
Member

Registered: 08/16/12
Posts: 219
Loc: Palatine, IL
Originally Posted By: BigMerc96
Its normal for the car to use a rich fuel mixture on a cold start in cold weather. Should lean back out to normal once it warms up.


Ok thanks!
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#2631474 - 11/26/12 12:08 AM Re: Rich fuel smell [Re: TerryConklin]
Josh_O Offline
Member

Registered: 08/16/12
Posts: 219
Loc: Palatine, IL
Originally Posted By: TerryConklin
Do you only smell the rich smell when you start it, or do you smell the general smell of fuel when you get near the car?


I smell it when I start my car before and after work. Not during normal driving or anything like that.
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#2631496 - 11/26/12 01:33 AM Re: Rich fuel smell [Re: Josh_O]
Tracy Offline
Over the Hill

Registered: 09/07/09
Posts: 3834
Loc: West Bend, WI, USA
Unless you can smell gasoline when driving or inside the car, then I wouldn't worry about it. Probably the richer fuel mixture used at cold startup.

If the smell gets worse or doesn't go away after car is warmed up, then start looking for possible leaks or other issues.
_________________________
1999 Deep Wedgewood Blue & Rust P71, 21x,xxx miles, full cloth interior, 3L55 RAR, BH1976 Headlight Relay Harness, and a few other mods. Former Chippewa Falls, WI PD car. I'm the 3rd owner of car.
Now with Mustang Wheels, Honeycomb Grille, and Ford AM/FM CD player with RDS.



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#2631557 - 11/26/12 10:30 AM Re: Rich fuel smell [Re: Josh_O]
Josh_O Offline
Member

Registered: 08/16/12
Posts: 219
Loc: Palatine, IL
Ok cool. It does go away after a min or so
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#2631559 - 11/26/12 10:42 AM Re: Rich fuel smell [Re: Josh_O]
BigMerc96 Offline

I know nothing
Posting Addict

Registered: 06/05/10
Posts: 19868
Loc: I can see Detroit from here!
Cool, yeah, thats normal. Same effect as the choke on a carburetted car. Just enriches the mixture to help the car start in the cold, also helps get the cat converters warm up faster.
_________________________
-Steve

2006 Audi A6 ~132k miles, stock.
1998 Mercury Grand Marquis LS HPP ~100k miles, slowly acquiring modifications.
1997 Town Car Cartier ~145k miles, Ported Plenum, Gutted Airbox, Contour E-fan Retrofit, Dual exhaust with Magnaflows, cats deleted, MSD Ignition, KYB Gas-A-Justs, P71 front bar, air ride reinstated, Projector retrofit, Caddy 4-note horn retrofit, Wood rim steering wheel retrofit, holistic weight reduction as the parts fall off..
1996 Mercury Grand Marquis GS 117,485mi. R.I.P. 7/14/12 frown

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#2631764 - 11/26/12 07:19 PM Re: Rich fuel smell [Re: BigMerc96]
Josh_O Offline
Member

Registered: 08/16/12
Posts: 219
Loc: Palatine, IL
Originally Posted By: BigMerc96
Cool, yeah, thats normal. Same effect as the choke on a carburetted car. Just enriches the mixture to help the car start in the cold, also helps get the cat converters warm up faster.


ok great thanks!
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#2631947 - 11/27/12 01:49 AM Re: Rich fuel smell [Re: Josh_O]
Coach_Buzzcut Offline
Member

Registered: 03/17/12
Posts: 151
Loc: Lincoln, NE, USA
That rich smell is the best thing about cold starts.
_________________________


2005 P71 (former Nebraska State Patrol)
-124k miles

Heinous upper/lower control arms, KYB shocks, Eaton lowering springs, Addco rear swaybar, 4.30s, port/polish plenum, full A/C delete w/delete pulley, shift tune, rebuilt exhaust w/all cats deleted, H-pipe deleted and dumped exhaust, 18'' chrome GT wheels with 255 tires, 20% tint, debadged.

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#2631948 - 11/27/12 01:51 AM Re: Rich fuel smell [Re: Josh_O]
DiGGM95 Offline
n00b

Registered: 03/24/11
Posts: 33
Loc: Church Hill, TN (East TN, Tri-...
Mine smells gassy for right at a minute when first started in freezing temperatures, but all the cars I've had with healthy catalytic converters do the same.

Really the only other exhaust smell my vic makes is the "wrath" that it puts out when driven spirited, I smell gunpowder and sulfur instead of gas lol! It keeps people from being annoying tailgaters. I know its bad because it catches up and gets me when I come to a stop.

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