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Effect of Low Compression on MPG 700 1989

posted by grahamg on Fri Oct 6 01:39 CST 2006
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last visit: Wed Feb 14 08:26 CST 2007

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Thank you.
Presssure testing was done by the Volvo Main Agent for this area so I assume it was by the book, and it has been done elsewhere with very similar results.

Results were in MPa (Psi)

COLD
0.75 (108)
0.62 (90)
0.62 (90)
0.82 (119)

HOT
0.72 (104)
0.68 (99)
0.68 (99)
0.80 (116)

I understand the spec is 9-11, bar 0.9 - 1.1 Mpa (130.5-159.5 Psi)
and all cylinders should be within 2Bar 0.2Mpa (29 psi)
So they just fit within the 2 bar criteria but are a long way down.
The engine is being stripped at a reputable shop as we speak so I should know more on the cause soon.

But I take your point about the timing belt, no one has mentioned that before.
Big Harry says it is all down to the head gasket and needing a valve job.

Graham

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Effect of Low Compression on MPG [700][1989]
posted by grahamg on Sun Oct 1 21:13 CST 2006 >

Effect of Low Compression on MPG [700][1989]
posted by someone claiming to be fixit2003 on Mon Oct 2 06:12 CST 2006 > V
- Effect of Low Compression on MPG [700][1989]
  posted by grahamg on Mon Oct 2 06:51 CST 2006 > V
  - Effect of Low Compression on MPG [700][1989]
    posted by illbird68 on Mon Oct 2 07:51 CST 2006 > V
    - Effect of Low Compression on MPG [700][1989]
      posted by walrus3 subscriber on Mon Oct 2 14:20 CST 2006 > V
      - Effect of Low Compression on MPG [700][1989]
        posted by Will740turbo subscriber on Mon Oct 2 14:40 CST 2006 > V
      - Effect of Low Compression on MPG [700][1989]
        posted by Aye Roll on Mon Oct 2 19:31 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
        posted by walrus3 subscriber on Tue Oct 3 01:47 CST 2006 > V
      - Effect of Low Compression on MPG [700][1989]
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      - Effect of Low Compression on MPG [700][1989]
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        Effect of Low Compression on MPG [700][1989]
        posted by walrus3 subscriber on Tue Oct 3 07:57 CST 2006 > V
    - Effect of Low Compression on MPG [700][1989]
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  - Court suggestions [700][1989]
    posted by Will740turbo subscriber on Mon Oct 2 14:50 CST 2006 > V
    - Court suggestions [700][1989]
      posted by grahamg on Mon Oct 2 15:30 CST 2006 > V
    - Court suggestions [700][1989]
      posted by illbird68 on Tue Oct 3 05:20 CST 2006 > V
      - Court suggestions [700][1989]
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    - Court suggestions [700][1989]
      posted by grahamg on Tue Oct 3 19:52 CST 2006 > V

Effect of Low Compression on MPG [700][1989]
posted by Big Harry on Tue Oct 3 02:32 CST 2006 > V
- Effect of Low Compression on MPG [700][1989]
  posted by grahamg on Tue Oct 3 02:51 CST 2006 > V
  - Effect of Low Compression on MPG [700][1989]
    posted by grahamg on Tue Oct 3 02:56 CST 2006 > V
    - Effect of Low Compression on MPG [700][1989]
      posted by Aye Roll on Tue Oct 3 16:19 CST 2006 > V
      - Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Tue Oct 3 17:13 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
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        Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Wed Oct 4 04:09 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
        posted by Big Harry on Wed Oct 4 05:55 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Wed Oct 4 10:26 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
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        Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Thu Oct 5 21:03 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Fri Oct 6 06:29 CST 2006 > V
        
        Effect of Low Compression on MPG [700][1989]
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        Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Wed Oct 4 04:18 CST 2006 > V

Effect of Low Compression on MPG [700][1989]
posted by zrubin on Tue Oct 3 03:01 CST 2006 > V
- Effect of Low Compression on MPG [700][1989]
  posted by grahamg on Tue Oct 3 04:56 CST 2006 > V
  - Effect of Low Compression on MPG [700][1989]
    posted by grahamg on Tue Oct 3 05:09 CST 2006 > V
    - Effect of Low Compression on MPG [700][1989]
      posted by Will740turbo subscriber on Tue Oct 3 14:48 CST 2006 > V
      - Effect of Low Compression on MPG [700][1989]
        posted by grahamg on Tue Oct 3 17:08 CST 2006 > V

Effect of Low Compression on MPG [700][1989]
posted by mapleleafer on Fri Oct 6 01:23 CST 2006 > V

Effect of Low Compression on MPG [700][1989]
posted by grahamg on Fri Oct 6 01:39 CST 2006 > V

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Effect of Low Compression on MPG 700 1989