Compression check results.
 

Odd, the one cylinder I expected to be low wasn't

1 160
2 160
3 160
4 170
5 165
6 165

That was with the engine "warm" to the touch. Figure
since I run synthetic it's fairly runny either hot or cold.

If I'm reading the service book correctly 120-150
is the "normal" range. No way there is that much
carbon in there. So either my gauge is a POS (could be)
or the book is wrong.

Nevermind. I just read another section where it says to
turn the engine over three times. I cranked till the needle
stopped moving. :/

--
DougW

Re: Compression check results.
 

You 'can' have that much carbon in it.....

You are the guy with the shitty wires and a miss?

I have opened up more than a few and there can be a lot in there. I did
the head gasket on mine a while back and decarboned it before hand.
There were still a couple loose chunks of carbon in it because I didn't
road run it after the clean and these chunks were close to 1/8" thick,
more than 1/16" for sure. This engine only had 40K on it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

You 'can' have that much carbon in it.....

You are the guy with the shitty wires and a miss?

I have opened up more than a few and there can be a lot in there. I did
the head gasket on mine a while back and decarboned it before hand.
There were still a couple loose chunks of carbon in it because I didn't
road run it after the clean and these chunks were close to 1/8" thick,
more than 1/16" for sure. This engine only had 40K on it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

You 'can' have that much carbon in it.....

You are the guy with the shitty wires and a miss?

I have opened up more than a few and there can be a lot in there. I did
the head gasket on mine a while back and decarboned it before hand.
There were still a couple loose chunks of carbon in it because I didn't
road run it after the clean and these chunks were close to 1/8" thick,
more than 1/16" for sure. This engine only had 40K on it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

You 'can' have that much carbon in it.....

You are the guy with the shitty wires and a miss?

I have opened up more than a few and there can be a lot in there. I did
the head gasket on mine a while back and decarboned it before hand.
There were still a couple loose chunks of carbon in it because I didn't
road run it after the clean and these chunks were close to 1/8" thick,
more than 1/16" for sure. This engine only had 40K on it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

Lookin' good. I think the three times is used to make sure the
battery last long enough to complete the test. Did you open your
butterfly?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

Lookin' good. I think the three times is used to make sure the
battery last long enough to complete the test. Did you open your
butterfly?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

Lookin' good. I think the three times is used to make sure the
battery last long enough to complete the test. Did you open your
butterfly?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

Lookin' good. I think the three times is used to make sure the
battery last long enough to complete the test. Did you open your
butterfly?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW

Re: Compression check results.
 

Your compression is good.

I would chalk any error (high reading) up to one of two things, or a
combination of them. Either you pumped the cylinders up too many times, or
your tester is out of calibration. Either way, you made the same error
across all six cylinders and came up with numbers that arer within spec for
the allowable ------.




"DougW" <post.replies@invalid.address> wrote in message
news:P0lbc.44451$vJ1.35892@okepread01...
> Odd, the one cylinder I expected to be low wasn't
>
> 1 160
> 2 160
> 3 160
> 4 170
> 5 165
> 6 165
>
> That was with the engine "warm" to the touch. Figure
> since I run synthetic it's fairly runny either hot or cold.
>
> If I'm reading the service book correctly 120-150
> is the "normal" range. No way there is that much
> carbon in there. So either my gauge is a POS (could be)
> or the book is wrong.
>
> Nevermind. I just read another section where it says to
> turn the engine over three times. I cranked till the needle
> stopped moving. :/
>
> --
> DougW
>
>