82 380sl - heavy black smoke - Benzworld.org

Aleks · 08-08-2003, 02:16 PM

Dear Experts,

Our pristine little beauty, '82 380SL, appears to be running a little too rich but I think it's more than that simple.

It smokes black heavily when it's started cold, also smokes bad when it's hot if I rev up the rpms in park or neutral - not that we do this.

We chanaged the injectors, frequency valve, oxygen sensor and prior to that the spark plug wires and plugs.

There's no freon in the a/c system if that makes a difference.

Thanks, Aleks

heckflosse · 08-09-2003, 01:05 AM

Possibly worn valves or seals allowing oil to enter the head.
As a general rule black smoke is usually oil, blue is fuel and white/clear water.

Greg in Oz · 08-11-2003, 01:09 AM

Quote:

Possibly worn valves or seals allowing oil to enter the head.
As a general rule black smoke is usually oil, blue is fuel and white/clear water.

Black smoke is usually rich fuel mixture. Blue is usually oil. White can be water or very bad oil problem, among others.

Aleks · 08-25-2003, 06:21 PM

Dear Benz Brothers,

We found the problem to be the warm-up regulator[:O].

It's the aluminum device staring you in the face at the front of the engine just left of center.

[:D]She is running smoother than smooth.[;)]

The component was about 550 USD. Let me know where I should be getting our parts if you will?

Aleks
Windsor, Ontario, Canada[;)]

Aleks · 08-25-2003, 06:25 PM

Thank-You Benz Brother HECKFLOSSE.

found it to be the "warm-up regulator"

Aleks

tungsten c · 10-02-2006, 11:36 AM

I have replaced just fuel distributor, spark plugs, fuel pumps, OEH valve and still get blck smoke after a while may be 15 miles. Any sugestions. In the morning the car smooth as a baby's a.. but after 10 to 15 miles black smoke develops at all speeds. I am contemplating to replace the O2 sensor. Any sugestions?

Thank you

nobby · 10-02-2006, 05:36 PM

Aleks,
GERMANSTAR .... I paid $225 plus a core charge of I think $25.00. Plus shipping of I think $25. All US funds. To Barrie Ontario. The dealer wanted $1250.00 and my first born.

A&L's300SL · 10-03-2006, 05:37 AM

Quote:

Originally Posted by tungsten c

I have replaced just fuel distributor, spark plugs, fuel pumps, OEH valve and still get blck smoke after a while may be 15 miles. Any sugestions. In the morning the car smooth as a baby's a.. but after 10 to 15 miles black smoke develops at all speeds. I am contemplating to replace the O2 sensor. Any sugestions?

Thank you

It would help if you say what model you have. I had a similar problem.

As above try the cold start injectors and check your fuel for contaminants like rust or water.

If I had done this first it would have saved me a fortune.

Good luck

tungsten c · 10-03-2006, 10:54 AM

I have a 560 Sl 1989