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Old 11-13-2006, 06:21 PM
dieseldan44's Avatar
Registered User
Join Date: Nov 2006
Location: Boston
Posts: 2,041
how much to pay for a w123 compression check?

...a local shop quoted $225 just to check the compression (nothing else) on a 82 300DT im looking to purchase.

im thinking this is way too much, is it?


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Old 11-13-2006, 06:25 PM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 37,995
about a hundred dollars.

tom w
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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Old 11-13-2006, 06:56 PM
Diesel newbie ;-)
Join Date: Aug 2006
Posts: 412
My local indy quoted about that much but it was for:
  • compression check
  • pop test and check spray pattern on injectors
  • balance injectors if required, shims included
  • new injectors as needed (+ parts cost)
  • check glow plugs (replacement + parts and additional labor)
'83 300D Turbo
Current: ???K mi - 19.2mpg -> 17.4mpg -> 22.9mpg ---> ODO Died
bought at: 233.8K mi - 10MPG For $1.00
3.5 cylinders work: 320 320 100 340 280
Got insurance? FarmersReallySucks.Com
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Old 11-13-2006, 07:09 PM
dkveuro's Avatar
Sword of Damocles
Join Date: Jun 2003
Location: Here an' there.
Posts: 2,548
$65.00 for leakdown and or compression test...not both.
$130.00. injector pressure/pop test.

Both together on same engine ...$162.50.

[ ]

"A liberal is someone who feels they owe a great debt to their fellow man, which debt he proposes to pay off with your money."
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Old 11-13-2006, 08:12 PM
dieseldan44's Avatar
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Join Date: Nov 2006
Location: Boston
Posts: 2,041
i hope i misunderstood...what should i expect?

thanks for all of the responses!

the same shop quoted me $160 for a general inspection of the car. im hoping the $225 was total for compression and the inspection. it must have been, ill call to clarify tomorrow.

if the car seems to run very well (200k miles, no apparent lack of power), has what i think to be average blowby, and is reported by the owner to have a *little* trouble starting on a cold morning, how bad should i expect the compression readings to be?
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Old 11-13-2006, 09:20 PM
mobetta's Avatar
Join Date: Mar 2006
Location: minnesota,hey.
Posts: 1,841

I just got a comp. tester off ebay for $25
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.
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Old 11-13-2006, 10:19 PM
Registered User
Join Date: Mar 2006
Location: Conyers, Ga.
Posts: 137
Harbor Freight has them on sale now for $17.95.

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