Past few weeks I noticed my car smoking out the exhaust when I would get on it from a stop light. Also about the same time I had started to run 93oct rather then 88 oct.

Because of this, I took it on a road trip yesterday thinking it would do the car some good since I normally only drive it in 10mile spirts around town.

While it got decent mpg (24.6) as soon as I filled back up it is now running like complete crap, and smoking alot more often.

Checked wires last night, no lightening storm.
Checked cap this am, still good
Changed the oil today(been needing to for a month)
Checked left front plug. while not perfect, I have pulled worse from running fine engines.
No engine codes... YET

What else should be on my check list?

 

what color is the smoke? make sure its black or grey if you think its a fuel issue. make sure its not water/coolant or oil burning in the exhaust!

 

its gray.

I know for a fact its not oil.

 

Just drove it to work, its only really noticable above 2500rpm.

No check engine light yet, after 17 miles of driving like this. So I dont think its a sensor.

Guess I will grab some delco plugs on the way home and drop them in. Cheapest solution I can think of for now. OO, check vac also.

Whats a cheap way to clean carbon out w/o buying a can of seafoam to suck in?

 

water

 

Mine smokes like that. The first time I noticed it was smoking it was white, now it's turned grey Then the smell of fuel, I also hear this noise that sounds like the exhaust is gonna fall off lol.. I don't really give a **** anymore, I'm just waiting for it to go so I can get a new motor.

 

my engine has less then 10k miles on it, it better not blow up.


I installed new plugs, they were carbon up (surprise surprise).
Still ran like crap.
Checked spark, its blue.


So I'm up for fuel injectors, or o2 sensor not out just yet?

50/50

 

what's your tps votlage reading? while my sitiation was a bit more extreme than yours, it would still smoke on the hiway when I laid into it (I could see people behind me cussing at the funes/smoke)

 

havent checked tps. But one strange thing about this car since day 1. If I change the TPS, it will throw a code. I bought a brand spaken new one from GM, put it on and it threw a code.

5 other misc ones from diff parts stores, misc brands. Codes
about 10+ from junk yards, codes.

 

i would check into wiring to/from the tps. do you have a laptop that you can hook up to the car to look at what the computer is getting from different sensors?

 

I have a laptop, but no program to read the computer.

 

Brain fart, I answered my own question right here.

 

lol...i kinda wondered about that when you said that. anyway, get tunerpro r/t...its free and will read the 3.1s computer.