exhaust smell question

L

LR5.0

New Member

Jun 28, 2004

56

0

0

Mar 12, 2007

#1

• Mar 12, 2007

• #1

i have a 94 5.0 with 65k miles and it is stock except for a bassani x-pipe and bassani catback. the x-pipe i bought new with convertors about two years ago as well as the catback and i recently have been getting some strong exhaust fumes lately when i sit idling for a few minutes at a stoplight or pretty much anywhere i stop with the windows down. i don't see any smoke and it has been about 30k miles since i have tuned it up last also i'm getting the surging idle lately. any ideas?

 

bill302

Active Member

Nov 2, 2005

2,131

1

46

alabama,gadsden

Mar 12, 2007

#2

• Mar 12, 2007

• #2

cel light illuminated? also pull codes alot of autoparts stores do it free and post any codes pulled...could in fact be bad o2 sensors..or pullcodes yourself click on link below.
http://www.muscularmustangs.com/test1.php

 

trav_19

New Member

Oct 29, 2006

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Jackson, MI

Mar 12, 2007

#3

• Mar 12, 2007

• #3

how long has it been installed i had mine on for awhile and with it lowered i was constantly scrapping and rubbing stuff so much that it loosened the bolts slightly at the x and cat back and i got fumes there i would check to see if it is tightened up

 

1TallMF

New Member

Apr 17, 2006

955

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Montreal

Mar 13, 2007

#4

• Mar 13, 2007

• #4

Does it smell at all like rotten eggs? If so your cats could be toast already. I've seen cats last as little as 1 year.

 

sn-95matt5-0

Member

Nov 6, 2006

170

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Mar 13, 2007

#5

• Mar 13, 2007

• #5

wait if the cats go out they make the rotten egg smell

does that mean that if i went with an off-road h-pipe that had no cats at all it will smell like rotten eggs

 

The Green GT

No 13 year olds are safe around me.

10 Year Member

Jan 8, 2006

1,269

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99

Louisiana

Mar 13, 2007

#6

• Mar 13, 2007

• #6

No.

No cats = gas smell

Bad cats = Rotten egg smell.


Personally, I love the smell of gasoline fumes in the morning.

 

L

LR5.0

New Member

Jun 28, 2004

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Mar 13, 2007

#7

• Mar 13, 2007

• #7

thanks for the replys, it doesn't smell like rotten eggs just alot like unburned fuel. i thought there had to be a check engine light on before codes could be pulled?

 

The Green GT

No 13 year olds are safe around me.

10 Year Member

Jan 8, 2006

1,269

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99

Louisiana

Mar 13, 2007

#8

• Mar 13, 2007

• #8

Some smaller things dont throw a CEL.

 

go-stang5.0

New Member

Jan 27, 2003

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Glenview,Il

Mar 15, 2007

#9

• Mar 15, 2007

• #9

Does this happen with the air vents on or off. Or does it not matter. If it smells only when the vents are on it could be a header gasket (that would make a tapping type noise under the hood), or it could also be an egr gasket or the egr line going to the header.

 

ProKiller

Founding Member

Apr 26, 2002

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78

PA

Mar 15, 2007

#10

• Mar 15, 2007

• #10

tossing another possiblity following go-stang's thinking, there is also a rubber hose that connects to the back of the intake and runs to a cylinder thing in the bay then down into the passenger fender. That connects to the charcoal canister. That takes the gas vapors in the tank, filters through the canister, then lets them into the engine. might be a hose on that routing.