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L67 compression reading

Dalto

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hey all,
New to this so please no hate, only a young fella trying to figure something out.
I have recently done a compression test on my 2000 VX Commodore with the L67 in it. The motor has approx 250 thousand k’s on it. Just curious as to what the readings should be.
The readings I got were;
Cylinder 1: 175
2: 160
3: 160
4: 165
5: 155
6: 160

Are these in the normal range?

Cheers in advance.
 
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Dylan kingswood

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Minimum for a eco tech is 100psi so so all good and seems funny that no.1 is 15 higher but within range so no stress sounds like a good motor and reason for the comp test?
 

Dalto

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Minimum for a eco tech is 100psi so so all good and seems funny that no.1 is 15 higher but within range so no stress sounds like a good motor and reason for the comp test?
It’s been losing water (no signs of a leak anywhere) and it’s building up pressure and then blowing out from the radiator cap so was testing to see if it could be the head gasket
 

Dylan kingswood

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I know the l67 are prone for the valley gaskets to leak losing water maybe water getting down low enough to causing it to overheat also have heard of heads cracking in these they run at a bit over 100 degrees are you running coolant ? Has it all been bled properly are you blowing white smoke out the exhaust when at running temp?
 

immortality

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Those numbers look fairly decent.

Unfortunately it's a common fault for the intake gaskets to fail on these engines. Mine were stuffed when we got it at 160,000km.

Pressurising the cooling system isn't great though, although with it been a blown engine it is well possible.
 

Dalto

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I know the l67 are prone for the valley gaskets to leak losing water maybe water getting down low enough to causing it to overheat also have heard of heads cracking in these they run at a bit over 100 degrees are you running coolant ? Has it all been bled properly are you blowing white smoke out the exhaust when at running temp?
Yeah, running coolant through it. No, no white smoke when running
 
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