1983 735i BMW smog & center bearing help

[chala]

If anyone knows of any sites that have tech help pages where they'll get right back to you - will you please post?
I just bought this BMW and it failed smog today. Bummer. IF anyone can decifer the numbers and what they mean and what needs to be fixed - please email me at:
chala@juno.com
Also the center bearing? needs to be replaced so when you start driving it - it goes thunk thunk thunk until you get up in speed and then it goes away. Whats the cheapest to get that fixed?
Here are the smog numbers

Any help is appreciated.
Here are the smog failure numbers:
HC 15MPH 185 MAX WAS126
HC 25MPH 189 MAXWAS 99
CO @15 GOOD AT 0.81 MAX 0.92
CO @25 0.81 MAX 0.72
NO @15 2333 MAX 1089
NO @25 2147 MAX 919
Any help is appreciated.

[AlfaEric]

If anyone knows of any sites that have tech help pages where they'll get right back to you - will you please post?
I just bought this BMW and it failed smog today. Bummer. IF anyone can decifer the numbers and what they mean and what needs to be fixed - please email me at:
chala@juno.com
Also the center bearing? needs to be replaced so when you start driving it - it goes thunk thunk thunk until you get up in speed and then it goes away. Whats the cheapest to get that fixed?
Here are the smog numbers

Any help is appreciated.
Here are the smog failure numbers:
HC 15MPH 185 MAX WAS126
HC 25MPH 189 MAXWAS 99
CO @15 GOOD AT 0.81 MAX 0.92
CO @25 0.81 MAX 0.72
NO @15 2333 MAX 1089
NO @25 2147 MAX 919
Any help is appreciated.

How is your car idling? Is it running hot?

Maybe this info will help:
Some of the Common Causes of Excessive Exhaust Emissions

Hi HC on Driving Test or High Idle Test

- Vacuum leaks (hoses, EGR valve, intake manifold, and carburetor).
- Ignition system malfunction (plugs, wires, coil)
- Faulty computerized engine management and/or oxygen sensor
- Faulty air injection system
- Internal engine problem (burned valves, poor compression)
- Failed Catalytic converter

Hi HC at Idle Test

- Ignition system malfunction (plugs, wires, coil)
- Incorrect air/fuel mixture
- Vacuum Leaks (hoses EGR, Intake manifold, carburetor)
- Incorrect ignition timing and/or idle speed
- EGR valve partially stuck open
- Faulty fuel injector Operation
- Internal engine problem (burned valves, poor compression)
- Inoperative or missing catalytic converter
- Air injection system failure

Hi CO on Driving Test or high Idle Test

Excessively rich mixture due to:

- Carburetor malfunction
- Dirty air filter, faulty choke
- Faulty computerized engine management and/or Oxygen Sensor
- Faulty fuel injection system
- Faulty Thermostatic Air Cleaner (TAC) system
- Defective evaporative canister purge system
- Inoperative or missing catalytic converter
- Faulty or missing air injection system

Hi CO at Idle Test

Excessively rich mixture due to:

- Miss adjusted idle mixture
- Dirty air filter, faulty carburetor or choke
- Faulty computerized engine management and/or Oxygen sensor - Faulty fuel injection
- High fuel electric fuel pump pressure (fuel regulator fault, restricted return line
- Inoperative or missing catalytic converter
- Faulty evaporative canister purge system

High NOx on driving Test

- Inoperative or ineffective EGR (Exhaust Gas Recirculation) system
- Excessive lean air/fuel ratio
- Inoperative or missing catalytic converter (three way catalytic)
- Excessive spark advance
- Faulty Thermostatic Air Cleaner (TAC) system
- Defective computerized engine management and/or Oxygen sensor
- Engine Deposits (Carbon)
- Engine Mechanical defect(s)

Some of the most common missed items related to emissions

- Dirty or contaminated engine oil.
- Plugged or non-functioning PCV system (Positive Crankcase Ventilation). (Valve or filter)
- Fuel Filter
- Air Filter
- Defective drive belts
- It could be one or more problem(s)

From:
http://www.troublecodes.net/articles/smog.shtml

---Eric

[SMOODY]

When was the last time the car was given a good tune-up? New plugs, wires, and air filter could be a step in the right direction.

Given that you have a number of items that are way out of range, I would look at the oxygen sensors. If they are not reading the exhaust properly then they will cause the engine computer to run the fuel mixture either too rich or too lean.

Given the age of the vehicle, a bad catalytic converter is also a possibility.

[Xchekker94]

I don't know if you got your e23 through emissions. But, here is the best link for tech help:

http://www.bimmerboard.com/forums/e23