Really bad exhaust smell

Lifelongtoy · 10-11-2007, 01:44 PM

My exhaust has always been bad, but I always thought it was because its an old engine. Now I'm not so sure.

It occured to me the other day that there might be something wrong. There is no coloration and it always passes instpection, but why does it smell so bad? Thanks yall.

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frodin1 · 10-11-2007, 01:48 PM

I'm assuming it has a cat. on it? That's what's stinking.It's common to get a rotten egg smell from it.

Lifelongtoy · 10-11-2007, 01:55 PM

I'm not sure that its the rotten egg smell. Its the typical old car exhaust smell, just alot worse.

Would it pass inspection with a bad cat?

frodin1 · 10-11-2007, 02:00 PM

They usually just get plugged when they're bad, and then your vehicle just wouldn't run or it would start acting up.

MRecio · 10-11-2007, 02:03 PM

it might just be running rich... many things can cause this but have you replaced or checked your 02 sensors in a while? they can get dirty and preform a little sluggish.. does it pass inspection just barley? the cat might be going bad as well... once i get some money i am going to get some downey headers high flow cat and run 2.5in exhaust and just open it up... and of course change the sensors.

Lifelongtoy · 10-11-2007, 02:28 PM

I just got a thorley header(I'm very impressed by the way). Could that have anything to do with it? Or is it just coincedence that I realized the smell now?

Lifelongtoy · 10-11-2007, 08:43 PM

The smell is starting to knock me out when I stop.

n4ynu1010 · 10-12-2007, 06:28 AM

LOL , wear breathing protection !!

Maybe your new headers are baking your cat (is that legal...baking cat) , who knows but like previous post usually mixture changes can drastically change the final result after cat smell , I would imagine that the headers have changed something in regards to your motor (problably running a bit cooler) and with the onset of cool weather , well who knows hehe .
Take her down the highway in 4th for a spell and maybe when you come back it will be normal , could be just the headers burning in or off as it may be .

Lifelongtoy · 10-12-2007, 07:47 AM

maybe I'll give it a shot. Thanks

10-11-2007, 01:48 PM	#2 (permalink)
frodin1 Registered User Join Date: Nov 2005 Location: NOW, Havasu! Posts: 1,066	I'm assuming it has a cat. on it? That's what's stinking.It's common to get a rotten egg smell from it. __________________ Pioneer HU, Audiobahn 10.100watt Sub, Sirius, Cobra NWWXST CB W/ K40, Wolo Air horn, K&N FIPK,Tokico Trekmasters,Tundra TRDs, Revtec spacers w/extended studs,Energy bushings on steering rack /front swaybar,SS front diff. drop kit w/skid plate mod,OME 890 Rears with OEM LC Tokicos,Ebrake ext. bracket, BFG AT/KO's, ProComp 1078 Alloys, Magnaflow SS muffler, Hayden 1678 Tranny Cooler, 85watt Amber fogs, 7 Way R/V plugin.

10-11-2007, 01:55 PM	#3 (permalink)
Lifelongtoy Registered User Join Date: Jan 2007 Location: In my drivers seat Posts: 251	I'm not sure that its the rotten egg smell. Its the typical old car exhaust smell, just alot worse. Would it pass inspection with a bad cat? __________________ 1986 4Runner 22RE Manual

10-11-2007, 02:00 PM	#4 (permalink)
frodin1 Registered User Join Date: Nov 2005 Location: NOW, Havasu! Posts: 1,066	They usually just get plugged when they're bad, and then your vehicle just wouldn't run or it would start acting up. __________________ Pioneer HU, Audiobahn 10.100watt Sub, Sirius, Cobra NWWXST CB W/ K40, Wolo Air horn, K&N FIPK,Tokico Trekmasters,Tundra TRDs, Revtec spacers w/extended studs,Energy bushings on steering rack /front swaybar,SS front diff. drop kit w/skid plate mod,OME 890 Rears with OEM LC Tokicos,Ebrake ext. bracket, BFG AT/KO's, ProComp 1078 Alloys, Magnaflow SS muffler, Hayden 1678 Tranny Cooler, 85watt Amber fogs, 7 Way R/V plugin.

10-11-2007, 02:03 PM	#5 (permalink)
MRecio Registered User Join Date: Jul 2007 Posts: 126	it might just be running rich... many things can cause this but have you replaced or checked your 02 sensors in a while? they can get dirty and preform a little sluggish.. does it pass inspection just barley? the cat might be going bad as well... once i get some money i am going to get some downey headers high flow cat and run 2.5in exhaust and just open it up... and of course change the sensors. __________________ 94 4Runner 3.0 Auto 150K "If you want to get there buy a Land Rover, If you want to get back get a Yota"

10-11-2007, 02:28 PM	#6 (permalink)
Lifelongtoy Registered User Join Date: Jan 2007 Location: In my drivers seat Posts: 251	I just got a thorley header(I'm very impressed by the way). Could that have anything to do with it? Or is it just coincedence that I realized the smell now? __________________ 1986 4Runner 22RE Manual

10-11-2007, 08:43 PM	#7 (permalink)
Lifelongtoy Registered User Join Date: Jan 2007 Location: In my drivers seat Posts: 251	The smell is starting to knock me out when I stop. __________________ 1986 4Runner 22RE Manual

10-12-2007, 06:28 AM	#8 (permalink)
n4ynu1010 Registered User Join Date: Sep 2007 Location: Richmond , Va / Henrico Co. Posts: 1,062	Exhaust Smell LOL , wear breathing protection !! Maybe your new headers are baking your cat (is that legal...baking cat) , who knows but like previous post usually mixture changes can drastically change the final result after cat smell , I would imagine that the headers have changed something in regards to your motor (problably running a bit cooler) and with the onset of cool weather , well who knows hehe . Take her down the highway in 4th for a spell and maybe when you come back it will be normal , could be just the headers burning in or off as it may be . __________________ Guy '91 ExCab Dlx Longbed/3VZE-Fast/Stock 2WD/5spd Manual '95 GMC Jimmy SLS 4WD/4.3L Vortech/Euro Susp and Motor Package/Tow Package F.A.I.T.H. Forsaking All I Trust HIM Matthew 19,20 : 19 I say again unto you,that if two of you shall agree on earth as touching anything they shall ask,it shall be done for them of my Father which is in Heaven 20 For where two or three are gathered in my Name,there Am I in the Midst of them Last edited by n4ynu1010; 10-12-2007 at 11:45 AM.

10-12-2007, 07:47 AM	#9 (permalink)
Lifelongtoy Registered User Join Date: Jan 2007 Location: In my drivers seat Posts: 251	maybe I'll give it a shot. Thanks __________________ 1986 4Runner 22RE Manual

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