i have a 92 camaro rs 305 tbi, has flowmasters y pipe to cat to dual out. the last month the exaust has been really smelly, it smeels like burnt gas but no black\white smoke, it might have a slight leeking headgasket but i keep it cool with the fan always on, i dont know whats wrong, the computer has been tested, no check engine light, i dident find any missing vaccume lines or leaking ones, used fuel injector cleaner, cleaned the tbi unit and injectors, its giveing me stomach akes and heartburn and my friends cant even sit in my car much, its VERY VERY bad, ive asked EVERYONE, no one knows what to do. PLEASE HELP, this is my daily driver even tho i do plan to sell it in a month i dont want to get sick from driveing it. or sell it this way!!!!

 

smells like gas? I dont see how thats a big problem, my car smells of UNBURNT gas which IS a problem (sorta..., but no cat so meh)....
Is the smell coming from your exhaust tips? or is it coming from the engine.
Just a thought, but maybe new plugs/wires/cap/rotor might help things out a little? The car runs good though?

 

Do a tune up, sounds like it's running rich. Check for exhaust leaks too that could be emitting fumes into the interior.

 

first thing is the exuast dumps out at the axels and i have a hole in my wheel bay so im sure some gets in there so im going to be geting longer tips, but its so horidable, the wires look very good there accels and the cap is a boshe gold, i tryed to change the plugs but there in there very very tightly and i cant get at 7\8. it runs good except eats gas.

the smeel makes me sick to my stomach and burns my throt.

 

How olds the O2 sensor?

 

Exhaust leak? Maybe before the cat?

 

It doesn't matter how good the wires look, but how old are they? Try to get in there and at least look at the plugs......it's not that hard. Also look at your 02 sensor. If it's eating gas like you say, it needs a tune up bc something is wrong.

 

you guys dont understand tho, ive did alot of car work in my life and these plugs are the hardest things ive ever did, there in there soooo tight and the last 2 i have to get under the car to get at and i really cant excess em, im a big guy im 6'5 and 300pounds, its really hard for me to do. THE o2 SENSOR IS BELEAVE IT STOCK.

 

Plugs take me maybe a half hour...

Change the 02 sensor if its stock, they're supposed to be changed every 30K I've heard.

 

idiot question, where is the o2 sensor

 

Driver side right below the manifold.

 

i took it down to ohio and back today, ttops down and stuff, its really bad when im just sitting idleing then take off, no real bad when driveing tho. it smells like hot\burnt gasoline, its very potent like if you where at a gas station and the wind was blowing and you got a wiff of the gasoline, like a really higly potent dizel fuel, i went about 20-30 miles today on 1/4 tank so its EATING gas too. is this leading up to the o2 sensor?

 

ummm if it smells like a gas station then you are smelling UNBURNT gas... you may have a fuel leak... make that definately. No car with a stock 305 will chug 1/4 tank in 20 miles. Thats like getting 5 miles per gallon! It's going somewhere other than the engine. Just start the car up on a dry surface and let it idle and look for drips while its running.

I just replaced the 3/8 feed and 5/16 return lines on my '91 because it was rotted out. Then I sold the rustbucket and picked up the beauty I have now

 

ill try it again tomarrow after i get out of class, but i have never notised ANYTHING leaking except the AC dripping water, i like your new one but how and why did you take off the smog pump and A.I.R.? Got any deatailed pictures of exasctly what you took off and how and how you cloged it?

 

Heres a detailed thread I made:
https://www.thirdgen.org/techbb2/sho...hreadid=317645

 

I had a bad mechanical fuel pump a while back.. made it smell like gas... never dripped a drop because it would evap so quickly of the top of the weep holes in it. only noticed when i turned it on and by chance looked down when i had the hood up.. Other than that the thing burning your throat and given headaches is exaust inside the car.. carbonmonoxide ya know.... I would check your system fo any leaks in it for exaust.. and close up any holes in the interior that lead to the outside of your car..(in the bottom of the car), because exaust is going to get up in there.. reason it is not as bad when moving is because it is being blown away more than just lifting.. when you sit it leaves the tips and goes straight up (unless therre is a wind) and on the bottom of a car it is going to find a way into the cabin, because it will move along the back half floor of the car until it can go up.

 

i seriously dont know, its comeing out the tail pipes

 

well if it is comin out the tail pipes then it probably is running to rich.... and you should really extend the tips to the rear of the car or ou torwards the sides. it might aleviate some of the exaust problem inside the car

 

ya, im gona try, uhh, it is running too rich i belave but wouldent it be just black smoke then? cause its very clean, what could cause that?

 

not really.. it does not have to smoke. smoke comes from oil.. I have had a car run so rich that i had to change oil (because gas got into it) and it never smoked once.. (after changing the oil i then readjusted and put a little dab od solder on the adjustment screws making sure they would not move again until i wanted them to)

 

TBI Not Carburated tho, how do i adjust it on the TBI?

 

... anyone?

 

Wouldn't you have to go into the ECM to adjust a TBI? since it is pretty much like a fuel injection system.... so i would suppose it would be tuned the same..

 

check your fuel pressure regulator, it may have taken a dump on you sending full pressure to the injectors.

 

Full tune up has been done, the injectors constantly spray fuel in the barrels i dont think that is normal is it? the 7\8th cylinders had the stock plugs (nasty) but it still smells like gas, now it smells like stright up unburnt gasoline, what exactly does that mean? And my gas millage is done

 

Constantly spraying.. well i guess it should be always putting fuel down it.. but depends on how much.. if it is a huge amount then it is not normal..

 

looks like a nice constant spray, like a windex bottle would give out. its quite abit, should i try and get a video?

 

might not hurt. Video is always worth alot more than ust trying to explain the oddness. a bit more helpful too.