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Old 10-19-2008, 03:40 PM
Registered User
Join Date: Aug 2001
Location: southern illinois
Posts: 233
93 300 se valve

i have a question my 93 300se is not firing in cyl #1 and it has a dead miss so i did a compression test result was cyl#1 60 psi #2 150 #3 150 #4 149 #5 151 #6 150 its not backfiring just has miss and i can hear a little clattering sometime when i accelerate. i also taken the valve cover off and everything looks good there so my question is what do you guys think my problem is burnt or stuck valve i dont have a cash for a mechanic right now thanks for your help.

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Old 10-19-2008, 09:36 PM
wbain5280's Avatar
Registered User
Join Date: May 2001
Location: Northern Va.
Posts: 3,386
Can you do a leak down test? That will tell you which valve is bad, rings or headgasket. Good luck.


Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL


Not part of the in-crowd since 1952.
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Old 10-19-2008, 09:45 PM
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Join Date: Jan 2008
Location: Melbourne Australia
Posts: 844
The reality is that if you have no cash at the present you will need to lay this car aside until you can come up with some.

I.M.H.O. This fault will surely require the lifting of the head and it's repair in some form. Potentially head gasket,valve guides and seals plus maybe a valve. If done by professionals it would cost over $ 1K Plus.

Even if you have the mechanical ability to attempt this repair your self it will cost some hundreds of dollars in parts.
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Old 10-19-2008, 10:09 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Just curious, how do you own a "S" class Mercedes and not have the money to fix it. They don't have Fannie Mae for auto ownership.

It will only get more costly to put it off and you haven't even seen a real loss till you try and unload a Mercedes with a serious engine problem.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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Old 10-20-2008, 05:55 PM
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Join Date: Aug 2001
Location: southern illinois
Posts: 233
93 300 se

for your information this 15 year old car was given to me in a realestate deal i have my cash invested in realestate no extra cash right now. but when i close these people this week i will have enought to buy a new s class so... back up off me cheif and watch what you say.

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