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

108,155

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 of 2 people found this helpful.
108,155

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

3 of 3 people found this helpful.
26,565

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

1 of 1 people found this helpful.
108,155

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

3 of 3 people found this 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.

108,155

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.

3 of 3 people found this helpful.
108,155

its better then spending $3,000.00

2 of 2 people found this helpful.

Your Answer

300-Class

Looking for a Used 300-Class in your area?

CarGurus has 185 nationwide 300-Class listings starting at $3,997.

ZIP:

Mercedes-Benz 300-Class Experts

  • #1
    James Ramond
    Reputation
    240
  • #2
    Tom Demyan
    Reputation
    220
  • #3
    COMETGUY61
    Reputation
    200
View All

Related Models For Sale

Used Mercedes-Benz C-Class
563 Great Deals out of 23,178 listings starting at $1,995
Used Mercedes-Benz E-Class
439 Great Deals out of 19,544 listings starting at $1,500
Used Mercedes-Benz CLA-Class
118 Great Deals out of 6,105 listings starting at $13,950
Used Mercedes-Benz S-Class
136 Great Deals out of 5,895 listings starting at $2,000
Used Mercedes-Benz CL-Class
28 Great Deals out of 503 listings starting at $3,300
Used BMW 3 Series
1,013 Great Deals out of 31,213 listings starting at $1,000
Used Mercedes-Benz SL-Class
50 Great Deals out of 2,718 listings starting at $3,950
Used Mercedes-Benz CLS-Class
75 Great Deals out of 2,095 listings starting at $7,499
Used Mercedes-Benz G-Class
19 Great Deals out of 1,269 listings starting at $19,995
Used Mercedes-Benz B-Class
383 listings starting at $19,969
Used Mercedes-Benz AMG GT
307 listings starting at $94,999
Used Mercedes-Benz M-Class
209 Great Deals out of 5,708 listings starting at $2,500
Used Mercedes-Benz CLK-Class
34 Great Deals out of 1,192 listings starting at $1,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.