2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal?

Old Mar 25, 2011 | 05:02 PM
  #1  
longstand's Avatar
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Default 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal?

WOW. i just did an Cylinder Head JOB. replace exhaust valve and head gasket.. everythings looks good.

but the Engine Compression is 240-246 Average compression

Why so high. is that normal?

and yes. i did check and adjust Valve Clearance Perfectly
 
Old Mar 25, 2011 | 07:26 PM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Carbon build-up reducing the air volume?
 
Old Mar 25, 2011 | 07:28 PM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Can't Be

There is no Carbon-Up on the Cylinder Head at ALL.

IT's been from the machine SHOP..

Even the Piston Head Was SHINY before i install it.

Everything Was SHiny.

SO nope. no carbon BUilt up..
 
Old Apr 14, 2011 | 07:02 AM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Check it with another compression gauge before you go tearing it down again. Curious - why the rebuild in the first place ?
 
Old Apr 14, 2011 | 07:45 AM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

I believe a chunk broke away from one valve? H
 
Old Apr 14, 2011 | 09:09 PM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Correct.

My #2 cylinder Exhaust Valve was damage
 
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Old May 3, 2011 | 06:29 AM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Originally Posted by longstand
WOW. i just did an Cylinder Head JOB. replace exhaust valve and head gasket.. everythings looks good.

but the Engine Compression is 240-246 Average compression

Why so high. is that normal?

and yes. i did check and adjust Valve Clearance Perfectly
Usually, vehicles with hybrid engine has high Engine Compression, but as high as 240-246. Check your Engines' compression gauge before fixing it.
 
Old Jun 12, 2016 | 09:32 AM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Needing to do a compression test on my hybrid and don't know what things I need to disconnect on the electrical side to keep from screwing up any computers or other electronics. Any help would be appreciated,
 
Old Jun 14, 2016 | 08:25 AM
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Default Re: 2007 Civic Hybrid Head 240 PSI Engine Compression? What the HELL. is this normal

Isnt high compression good? You might get better mpg out of say premium gas. How do you do a compression test? Im kind of new to this.
 
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