this never happened before. i got a skunk 2 exahust stock cat and cold air, on my em1. it only used to get black around where the exhaust it. but even after an oil change, my rear bumper is cover 2/3rds with this black **** comes out my exhaust?

any help to what it is (obviolsy from burning oil) but i use synthetic 5w30 everytime and change it all the time..

are my pistons ****eD?

what is the problem?

 

car drives like normal ... i plan to go boost soon so i need to get this solved so it's reliable

 

Well...do you burn oil?

 

Sounds like the engine is running rich. Do you get poor gas mileage? Any CEL codes?

 

yeah, when is the last mileage you did routine maintenance (spark plugs/cap/rotor/plug wires/O2,etc?)

 

okay last time i did an oil change was about 2,500 miles ago. And i am throwing a check englie light. which i believe is to be b.c i have a universal catalytic converter on there. I get good gas mileage actually about 25 or 28 mpg.

 

havent chagned the spark plugs in about 6 months... and cap rotor plug wires and 02 sensor i've never changed since i did my swap about 2 years ago. lol

 

Pull the CEL codes and post them. Also do an ignition system tune up, including setting the ignition timing to spec.

 

Yes, get the CEL and post it.

Most common cause of soot on the back bumper that I've seen is a weak or dead primary O2, which tends to cause it to run rich, which tends to leave soot on the bumper.

 

okay will do this CEL check soon and post it

 

sounds like you didn't mod up correctly. could be anything

 

what did i do wrong in the mods?

im open to suggestions

 

damn wish i could help[

 

post your check engine codes.

 

Got my check engine like dagnosed and it said that it was the 2ndary heat 02 sensor.. and thats all..

I also saw that my vtec solenoid was leaking adn that could have been a part of losing oil quickly. and i just replaced my cam seal .. like a 60 buck fix

 

also replaced vtec solenoid gaskets

 

What was the specific code number?

How old are the plugs, wires, cap, and rotor? Is the ignition timing set to spec?

 

I dont know the specific #, but i went to my local sunoco shop and had them hook up the obd2 sensor thing oonto my car, (just liek when u get ur emissions done) and thats what came up, plus wires cap and rotor are pretty old, i never changed em. and the ignition is strait

 

1) You can pull CEL codes yourself with a paperclip - see CEL sticky at the top. Is the secondary O2 sensor unplugged? If not, check whether dash fuse 15 is blown.

2) Do an ignition system tune up ASAP - plugs, wires, cap, and rotor. And then set the ignition timing.

 

those specs can also be oil coming out of the exhaust. how much oil do you lose per oil change

 

It's hard to say really, i was losing about 2 quarts every 3000k miles i think maybe less

 

Your engine is burning or leaking a lot of oil.