Can anyone tell me what is a wrong? here lately when i go anywhere in my truck when i get out i notice a smell that smells like gunpowder or like the smell that firecrackers
leaves after you light them off? it is coming from my exaust tailpipes also at a red light it will get a rough idle at times and this odor comes in the cab and if you go in hilly areas it really smells bad does anyone elses smell like this is it normal PLEASE HELP my
truck is a 97 F-150 4.6 V-8

 

A rotten egg or clorine smell is the sign of a catalytic coverter in trouble.

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97 F-150,4.6, Reg Cab, Flareside, Air Aid Kit, TransGo Shift Kit,
Superchips, Gibson Single Cat Back, ******* Bed Cover,
EGR Bug Shield, XL Full Length Running Boards,
Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs

 

TELLENBERGER,

You mean a sulfur smell? I though it just happened at cold startup, or thats when I can smell it.

 

F-trucks,

If its the sulfur smell, are you sure you dont have gas?

 

Your cat(s) are clogged.

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'95 Eddie Bauer F-150 SC & '64 Falcon/Ranchero
-------------------------------------
Are you A.S.E. Certified ? If so, ask me about
iATN...the best tool you'll ever have ! ! And it's
free

 

I think we are all of the same opinion, just a matter of what it smells like. Are you sure it is your truck that smells and not some other vehicle near you at an intersection?



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97 F-150,4.6, Reg Cab, Flareside, Air Aid Kit, TransGo Shift Kit,
Superchips, Gibson Single Cat Back, ******* Bed Cover,
EGR Bug Shield, XL Full Length Running Boards,
Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs

 

firecrackers smell like rotten eggs? hmmm, I think F-Trucks has to reply on that part. I knew about the rotten eggs=catalytic conv. but gunpowder like smell? hilly regions? stop light? sounds to me like whenever the transmission is under load ie taking off from a stop or hills? I am guessing of course.

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David
'99 F150 XLT SC, STYLESIDE
3.73, 4X4 ORP 5.4L, AUTO,
139wb, Medium Red Tor.,
Rhino, K&N, BugGuard,
RainGuards, Superchip, Soft Tonneau
f150online sticker!!! GET ONE NOW!

 

Been a really long time since I learned this stuff, but I believe it's H2S in the exhaust that smells like rotten eggs. This is bad stuff because when it combines with moisture in the air, you get... H2SO4 (sulfuric acid) that falls back on your truck in the form of acid rain.

Yes, eggs have sulfur in them. So does the explosive used in firecrackers and gun powder. F-trucks probably has a nose that's sensitive to sulfur.

Like Pkrwud and Tellenberger have said, it sounds like a bad catalytic converter.

 

FAST triton if it was gas from me you would no it cause it would scorch the hair in your nose? NO seriousaly it is deffintaly coming
from my truck out the exaust tellenberger when i park my truck in the drive i get out and it really stinks and no it aint my outdoor toilet he!he!he! i kind of thought it could be bad catylitic convertors but wouldnt for sure just wanted to see if anyone else had this trouble. also if they are bad i was kind of wondering if there clogged could this be what is causing my truck to have the engine pinging i have tried every cleaner and different gas but it will not go away also isnt ford suppose to give a 100.000 mile warranty on emision parts
or will i have to pay out of my pocket? hope not it looks like they are 4 convertors on this truck THANKS guys/gals for the info this website is awsome very informative
97 F-150 ext cab 4+4 4.6 triton XLT
smitty built pushbar and nerf bars 8 off-road lights lund cab extender, head and tailight covers, K/N flowmaster 70 series duals, 16 by 10 A/R atlas polished rims, 285/75/16 tires, vent visors, sidewindow louvers, lund cowl visor, 10 disc CD, pioneer subwoofers 400 watt amp so i can listen to alan jackson loud and clear, soft tonneue cover,heckethorn steering stabilizer
and a dale jarret 88 plate future mods ram air hood,and a 3 inch body lift with a 4 inch suspension lift.