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  #1  
Old 10-31-2001, 06:14 PM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
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Question Compression Test Results for 1988 300E with <100k miles

Hello,

I am looking at a 1988 300E with approximately 95,000 miles. The car is in great shape, and I had the dealer do a compression check. Highest value was 160 psi and the lowest was 150 psi. Is this a reasonable range for the engine on this car? Thanks, Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #2  
Old 10-31-2001, 07:58 PM
scuba
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I think a compression rate between 150 PSI and 160 PSI is pretty darn on good for any vehicle. The main thing you want to look for is, not that you have one cylinder with 150 PSi and an other one with 80.
My 1980 model 450SL has 130,000 miles on it and the compression is between 155 PSI and 168 PSI.


Gunter
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  #3  
Old 11-01-2001, 10:03 AM
LarryBible
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The pressure is good and you are within 10% all the way across. This is very good.

Good luck,
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  #4  
Old 11-01-2001, 03:38 PM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
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Thanks for the input Larry and scuba, I will be picking up the car on November 16. Once I get it I will let you know more about it. Thanks again, Jim
__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #5  
Old 11-12-2001, 11:19 PM
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Join Date: Aug 2000
Location: Austin, TX
Posts: 576
Thumbs up

This is interesting. I just did a compression check on my '90 300SE because it has 263K on it and I was thinking it might be time to trade horses before the engine got too tired.

I got readings of 165 to 170 across the board. I guess the old yacht still has plenty of life left in her.
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Mr. BILL

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)
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