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Old 08-03-2005, 07:35 PM
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Join Date: Dec 2004
Location: Redondo Beach, CA
Posts: 18
Engine Knock after oil change

1993 300E 2.8

The car got an oil change last week, then I left it sitting in the garage for about 6 days. When I started it this morning, the engine started to run very rough, had engine knock, shook vilolently for a few seconds like it had no oil. The idle started to get better after about 10 seconds and finally ran normally.

I thought there was no oil in the car, but there was no oil spill underneath and there was oil when I checked the dipstick.

Anyone experienced this too? Is there a part that needs attention/replacement/repair?


'93 300E 2.8 - 138K miles
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Old 08-03-2005, 08:09 PM
Palangi's Avatar
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Join Date: Dec 2000
Location: Republique de Banana
Posts: 3,496
First thing that pops into my mind is an incorrect or defective oil filter.

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg

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Old 08-03-2005, 08:27 PM
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Join Date: May 2005
Posts: 992
engine knock

an engine knock could be a bad spark plug wire...
on the m103 six cylinder it will run on 5 cylinders

or it could be an internal engine problem probably in the bottom half
like a piston bearing.... or smothing in the bottom of the engine...

(now at this point I am out of my league)
I would think that if it was a piston or lower bearing if you got lucky and it was the front of the engine and you could remove the oil pan i would think it might be possible to disconnect the piston from the crank and replace the bearing.... but i am only guessing... but i am the type of guy to try it...
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Old 08-03-2005, 08:30 PM
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Join Date: May 2005
Posts: 992

actually i own 4 mbs and one of mine is like yours... and it
has the m104 engine... and it is mid 90's... it has an engine knock
after i had it rebuilt and the shop that did it is having to redo it and so its
been out of comish a long time... and it crank shaft. they say.
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Old 08-03-2005, 09:39 PM
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Join Date: Aug 2003
Location: Phoenix
Posts: 3,726
A 93 2.8 is a 104 motor. The problem is most likely stuck lifters from sitting for 6 days, perhaps related to the new oil, perhaps not. There are oil additives for such things. The other solution is to not let it sit for 6 days, or if you do turn it over many times before letting it start.
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Old 08-04-2005, 08:47 AM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 32,269
what oil are you using

in my 500sec 84 if i use rotella the lifter (one) will tick for a while on startup til the oil has 1500 miles on it. with mobil one 1030 it doesnt.

tom w
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins& six speed; I have had about 35 benzes. I am finishing a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual....I also have a 427 Cobra replica with an aluminum chassis.
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Old 08-04-2005, 08:53 AM
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Join Date: Oct 2004
Location: Baton Rouge La
Posts: 2,621
my sons 300e will have a lifter tick for a few seconds. I use 20w50 dino in it....

I may back down when the summer winds down and try 15w40 Rotella or a synthetic of similar weight to see what happens.

runs great... that tick tick tick is a bit annoying at start up, however... goes away in a few seconds.....
1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride)

1994 e320 Cabriolet 98k (finally)

1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it

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