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#1
04-16-2010, 10:31 AM
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Compression test ?
I have a motor that I got from the guy that I bought my car from. (1984 190D) Can I do a compression test on that motor while it is out of the car? If so, how do I do the test? Thanks.
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#2
04-16-2010, 10:35 AM
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You need to be able to spin it using the starter motor. All GP's or injectors should be removed as well.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#4
04-16-2010, 11:05 AM
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A Drill...?
Err, No! Easy enough to chuck a starter on there providing the flywheel/flexplate and engine back-plate is fitted... Needs to be the starter, as this runs the engine at the appropriate speed to check compressions....
__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg Alastair AKA H.C.II South Wales, U.K. based member W123, 1985 300TD Wagon, 256K, -Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.  W114, 1975 280E Custard Yellow, -Great above decks needs chassis welding--Really will do it this year....
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#5
04-16-2010, 11:09 AM
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Quote:
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#6
04-16-2010, 12:15 PM
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Sounds like its time for a junk yard run. Id be making a list of all other goodies ya need too.
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1985 300D 198K sold 1982 300D 202K 1989 300E 125K 1992 940T "If you dont have time to do it safely, you dont have time to do it" "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
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#7
04-16-2010, 12:25 PM
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You could do a leak down test instead... actually tells more in some ways if there is a problem... indicating whether it is rings/lower end or head/valves. and does NOT require the use of the starter.... can be moved into position for each bore with a 27 mm deep socket and breaker bar...
Lots of info in the archives available by the search feature .
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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