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Extremely high compression

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  #1  
Old 01-22-2008, 10:09 AM
Honda_rookie's Avatar
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Default Extremely high compression
I did a compression test on my 93' dx and my result were as follows #1 175psi, #2 180psi, #3 180psi, #4 280psi.

Anyone have any ideas why it is so high on #4.
 
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  #2  
Old 01-22-2008, 10:32 AM
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Default RE: Extremely high compression
Carbon, water, oil, etc. in the cylinder.
 
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  #3  
Old 01-22-2008, 10:42 AM
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Default RE: Extremely high compression
# 4 looks really high, did you do this with the engine hot or cold?
 
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  #4  
Old 01-22-2008, 11:04 AM
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Default RE: Extremely high compression
My question would be is cylinder 4 high or, alternatively, are the other three cylinders low?
 
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  #5  
Old 01-22-2008, 11:07 AM
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Default RE: Extremely high compression
180 is a good normal reading on a stock engine.
 
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Old 01-22-2008, 11:15 AM
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Default RE: Extremely high compression
Thanks mk378. I didn't know what was the acceptable compression value range.
 
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  #7  
Old 01-22-2008, 01:36 PM
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Default RE: Extremely high compression
buildup in the combustion chamber...
 
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  #8  
Old 01-22-2008, 01:43 PM
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Default RE: Extremely high compression
theres the excuse for a new timing belt, plugs, wires, water pump, head gasket, yatta yatta......hell get some new pistons, some cams valve train.

 
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  #9  
Old 01-22-2008, 01:54 PM
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Default RE: Extremely high compression
ORIGINAL: my94civic

theres the excuse for a new timing belt, plugs, wires, water pump, head gasket, yatta yatta......hell get some new pistons, some cams valve train.

No, it's an excuse to run two cans of seafoam through your engine...
 
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  #10  
Old 01-22-2008, 02:00 PM
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Default RE: Extremely high compression
yeh your right, im just looking for my excuse to justify doing that work to the wife... "yeh i have to take a look inside to see whats up... and then buy all this new stuff"
 
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