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#1
06-17-2007, 11:57 AM
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87 300TD cold compression 400-460 good?
These cold compression numbers OK?
1 - 400 psi 2 - 460 3 - 450 4 - 440 5 - 460 6 - 400 Should I be concerned with 1 and 6? Car has about 189K on it. Thanks, Dave
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Currently driving a very clean 1985 300SD from the West Coast. 
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#2
06-17-2007, 01:49 PM
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for me
if i found one like that i would retest with another comp gauge,if it repeats then i would take it apart and find the reason the compression is too high.
larry perkins lou ky
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#3
06-17-2007, 02:50 PM
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Didn't think to high. Could be my made in China cheap ebay gauge.
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Currently driving a very clean 1985 300SD from the West Coast.
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#4
06-17-2007, 02:57 PM
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Made in China = POS. Don't trust the quality.
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DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012 
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#5
06-17-2007, 03:29 PM
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I know, it bites me every time. This time it looks like the gauge maybe accurate as I have a USG gauge and it slightly lower at 380 on #1. Thing is its like about 75 degrees out and I did run the motor for like about 20 seconds this am. Maybe I'll try one more time in tomorrow morning. Think it has carbon inside? The intake had some crude in it. I'm not taking it apart. It runs good, just has a little roughness when you first start it for a couple of minutes, you know sputter here and there.
The problem I am having with this cheap setup is the quick connect is popping of at around 400 psi sometimes. Pieced together another setup with pieces I have. hhmmmm. Don't want to make a big project out of this as I want to sell it. Dave
__________________
Currently driving a very clean 1985 300SD from the West Coast.
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#6
06-17-2007, 06:48 PM
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Quote:
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DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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#7
06-17-2007, 08:41 PM
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Not all bad
It looks to me like it might be reading a bit high, but I would live with it. Better then having them all reading low. I would just mentally take 50 psi off from each one, and then you can still say, it's got pretty good compression.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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#8
06-17-2007, 08:47 PM
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Yes, after more thought I'm putting it back together and calling it good. Its a used car, not going through oil or coolant, starts decent, has new glowplugs and rebuilt injectors. I've got $5,000 into and hoping to get that back. Another few weeks and she should be ready for Ebay.
__________________
Currently driving a very clean 1985 300SD from the West Coast.
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