White Smoke problems on my 93' E500 - PeachParts Mercedes-Benz Forum

#1 03-20-2003, 04:17 AM

I had my injector nozzles cleaned, and as they were replaced my car started to emit white smoke from the exhaust. I took the car to my MB workshop, they carried out all electrical diagnostics and found no problem, but the car still continues to give off this white smoke.
I replaced the egine oil and filter, and problem still persists.
Has anybody any ideas on what i should do?

Kestas · #2 03-20-2003, 10:40 AM

When does it smoke? Has the coolant level dropped significantly? What do the plugs look like? It may be a bad head gasket.

#3 03-20-2003, 01:51 PM

Hi,

I changed the plugs after the smoking started and it didn't make a difference.
As you start the engine it starts to smoke, it gets worse when ever I put my foot on the gas.
Coolant level dropped when I revd the engine and thought I could get rid of excess carbon.
Pls help!

manny · #4 03-20-2003, 04:03 PM

Smell the exhaust ( not too long ).
If it has a sweet smell to it, I would suspect it may be coolant.

Kestas · #5 03-20-2003, 04:26 PM

You may want to look at all eight plugs. If there's a coolant leak into the cylinder, the plug will look clean. It will also narrow down the location of the leak. Moisture in the cylinders has a cleaning effect on the carbon deposits.

#6 03-20-2003, 04:42 PM

Thanks Guys,

The smoke from the exhaust smells like ATF. I'll check on the new plugs for leakages.

Thanks once again.

Kestas · #7 03-20-2003, 05:50 PM

mrjack, you may be onto something. Does your car come equipped with a transmission modulator? I know on old-style cars these often went bad resulting in ATF getting sucked into the engine via the vacuum line from the transmission regulator.

Check all your vacuum lines - especially the ones from the transmission - and see if they are wet on the inside with ATF.

rdanz · #8 03-21-2003, 11:15 AM

Do a compression test

#9 03-21-2003, 01:23 PM

Kestas,
We checked the vacuum lines but there is no leakage.
I noticed my engine oil level dropped. But the car had never smoked prior to the nozzle service.

#10 03-21-2003, 01:27 PM

We carried out a compression test at the local MB workshop, it was positive.

#11 03-23-2003, 04:54 PM

Hi mrjack,

Suggest that you carefully look for signs of a head gasket leak. This just happened on my 300E.

Coolant was disappearing but no signs of a leak.

Turns out it was leaking into the front cylinder. Pulled the plugs and found one wet one. Cranked engine with all plugs removed and water came out like a geyser from the front cylinder.

How is the engine temp? If it starts to rise above normal, turn on the heater and pull over to let it cool.

Call a flatbed or you might warp the head(s).

Coolant should not leak. It's going somewhere and white smoke usually means a head gasket leak.

Good luck,

#12 03-24-2003, 03:31 PM

Hi Chicago124,

Latest on the smoking problem is, my egine oil seems to be disappearing faster than my gas.... Yap its running pretty high on the temperature!
Somebody suggested a faulty valve seal. We are having that checked out 2morrow.
Any more suggestions?

#13 03-24-2003, 04:55 PM

Hi mrjack,

Will, oil leakage would be blue smoke.

Perhaps you now have two problems. First, I would check the drain plug and the tightness of the oil filter.

Has the coolant stopped leaking? Are you still adding to the tank?

Regards,

pentoman · #14 03-25-2003, 07:07 AM

he's right, engine oil would be BLUE smoke..

unless you have 2 problems at once.

#15 03-25-2003, 04:51 PM

The coolant still leaks, Its strange but the smoke is white and I am loosing a lot of engine oil! Mind u I can't see any physical leakage. I am yet to check the plugs again.