95 bmw 325i with 50k miles.


%CO2 %O2 HC (PPM)
Test RPM Measured Measured Max Ave Measured
15 mph 1949 14.7 0.2 85 12 99
25 mph 1906 14.7 0.2 50 5 50


As you can see I barely failed the HC portion of the test. What can I do to pass?

Thanks,
CB


[Modified by Cheap Bastard, 8:12 PM 8/27/2002]

 

just wondering, couldn't you lean out your air/fuel mixture to reduce hc's? maybe that's something you could look into. just a suggestion.

 

How do I go about leaning out the air/fuel mixture?

 

Goto your local "Hook-up" Shop and pay them extra for smog and they should just pass you.

 

well, i won't be able to comment on the bmw's engine or fuel management, but with our hondas, we can fiddle with the fuel pressure regulator (if you have one, like a b&m or aem for example), or if you have the v-afc or s-afc you can lean out the air/fuel mixture that way.

 

No such thing on this car. I think I'll just start with plugs, wires, cap rotor, fuel cleaner, and some pass smog in a bottle.

I was trying to look for some concrete answer that I know will work. The shop wanted $70 per hour to diagnose the problem!

Screw that,
CB

 

if there is some way to change ignition timing then retard the timing 3 or 4 degrees. check to make sure the plugs are in good condition. fill it up with premium fuel and beat the hell out of it just before you take it in to get re-tested. make sure the engine/cat-converter is really hot.

that should work..............also i've seen that stuff made by CRC called Guaranteed to Pass do wonders if you follow the directions correctly.......

good luck

 

i may do that to lower my HC but what can i do to lower my NO im at 1633 and 1334 way past the 1088 and 948 max... Please help

 

My friend at emissions told me Alcohol makes it worse but I don't see how.

 

what you do is go to the local gas station pay the bumbkin working there and have one of your buddies with a car that passed and have him put all your info in and then move your car and put his in and run it instead

that is what me and cimorellicrx did to get his to pass and that got a ticket dropped the next day so it works out he paid a total of 32.50 for all of it

 

I dont know **** about BMW's, but if you can retard the timing slightly, to make it run like crap, you will pass. I had a 87 Trans Am, and it woudlnt pass smog from the aftermarket parts and internals i used. So i retared the timing by turning the distributer, and it passed. Might want to check into this if you can retard your timing.

 

What do you have done too your bimmer!!!

I own to many of them
73/74 2002tii
88 m3
family has bimmers

Doug

 

I barely failed to so I don't think I'll need to do too much. I changed out the plugs and going to use some X66-A and clean out the motor. I am confident it will work.

I believe that the car was still too cold before I handed the car over. I only live a block away from the smog facility. Also the thermostat in the Bimmer is broken in the open position. The motor takes a bit longer to warm up.

This car is my wifes car and she won't let me modify it. It's completely stock.

My mother inlaw's 92 325i is fixed up. I think it has a Racing Dynamic chip, body kit and 16x8 wheels with 225/45 tire. I installed Eibach Prokit springs and Bilstein shocks. This car looks so good and it handles great. The fenders had to be rolled because the wheels and offset was a bit too wide. Now the rear is tucked like the race cars.

It only has 28k miles. She works 1/4 mile away from home, and rarely goes anywhere far with the car.

I think she is going to give it to me soon.

CB

 

I'd just take it back w/ the cat real hot. Made a huge difference in my 94 prelude vtec.

 

YOUR MOTHER IN LAW HAS A FIXED UP BIMMER? Wow, ain't that something? Only if she's like 20 yrs younger