My 87 300E MB is burning oil won't pass smog

Asked by Sep 23, 2015 at 01:34 PM about the Mercedes-Benz 300-Class

Question type: Maintenance & Repair

Hello, My 87 300 E is burning oil and can't pass a smog test. Runs rough.

7 Answers

83,555

You rings are most likely no good, try this stuff, change your oil and replace two quarts of oil with two quarts of Lucas, the day you take the car in for inspection. It may or may not work but its cheaper then buying a new car or getting a ring job...

2 out of 2 people think this is helpful.
83,555

http://lucasoil.hodgsoncorp.com/vehicle_burning_oil.htm

3 out of 3 people think this is helpful.
19,235

first go up 2 heat ranges on you spark plugs.... !!!

1 out of 1 people think this is helpful.
83,555

Oh Sh*t thanks Kelly I forgot about that...

3 out of 3 people think this is helpful.

Thank you all for your help. It was running rough when stopped at a stop light sounding like it was missing. Upon acceleration everything was fine. I was afraid it was going to die in the middle of an intersection so I took it to the mechanic the first time and we added new spark plugs and a fuel filter. Ran a bit better but still was missing at idle or in neutral. We have had an oil leak, not sure from where but we add Lucas Stop Leak and it seems it's a bit less. Yesterday we took it to the mechanic and he said showed us the new spark plug we just put in and said it was full of carbon. Then he put it on the Smog test scope to see if something else is going on and the numbers came back that said we have a "Gross Polluter" and should see about "retiring" it or pay $3000.00 for a rebuilt engine. The HC reading on Gas was 3476 and the limit is 110. I don't know how this could have happened because last year we passed the smog with no problem. Sorry to be so long winded but it is frustrating.

83,555

May want to try it one more time. you are going to have to do all this the night before your bring it in and don't drive the car only to the shop for its smog test...Run one can of seafoam in the engine...Go up 2 heat ranges on you spark plugs.... change your oil and replace two quarts of oil with two quarts of Lucas, Clean you throttle body with CRC.

2 out of 2 people think this is helpful.
83,555

its better then spending $3,000.00

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

300-Class

Looking for a Used 300-Class in your area?

CarGurus has 199 nationwide 300-Class listings starting at $6,950.

ZIP:

Search Mercedes-Benz 300-Class Questions

Mercedes-Benz 300-Class Experts

#1 James Ramond
James Ramond
Reputation 200
#1 Tom Demyan
Tom Demyan
Reputation 200
#3 joemom
joemom
Reputation 170
View All

Related Models For Sale

Used Mercedes-Benz C-Class
1,004 Great Deals out of 32,766 listings starting at $1,950
Used Mercedes-Benz E-Class
769 Great Deals out of 22,838 listings starting at $1,600
Used BMW 3 Series
1,797 Great Deals out of 40,896 listings starting at $1,250
Used Mercedes-Benz S-Class
175 Great Deals out of 6,001 listings starting at $2,500
Used Mercedes-Benz CL-Class
32 Great Deals out of 615 listings starting at $4,786
Used Mercedes-Benz CLA-Class
140 Great Deals out of 5,696 listings starting at $18,876
Used Mercedes-Benz CLS-Class
111 Great Deals out of 2,174 listings starting at $6,950
Used Mercedes-Benz SL-Class
113 Great Deals out of 3,431 listings starting at $1,500
Used Mercedes-Benz G-Class
8 Great Deals out of 868 listings starting at $24,900
Used Mercedes-Benz CLK-Class
64 Great Deals out of 1,463 listings starting at $2,990
Used Mercedes-Benz AMG GT
416 listings starting at $80,465
Used Mercedes-Benz B-Class
220 listings starting at $20,350
Used Mercedes-Benz M-Class
291 Great Deals out of 5,699 listings starting at $2,500