compression test results

[jivepepper]

I just finished my compression test. This is the result what does everyone think?


Back of engine

4=167 8=169
3=166 7=172
2=166 6=169
1=167 5=167

Front of engine

The test was done on a cold engine.

 

[jivepepper]

Ttt

 

[billfisher]

not too bad

your high to low is within 95%. seems ok balance.

 

[bdcardinal]

looks good.

 

[mrvax]

It looks fine.

 

[jivepepper]

Thanks I just wanted a second opinion.

 

[registered]

Hi,

Where can I get a compression test?

I was told by someone I could walk into Autozone and they'd do it, but they said they don't do compression tests.

Thank you,
Brent

 

[hotmustang331]

Yep, that looks fine...good thing to do with a S/Cd motor.
You can go to autozone and buy a compression tester...pull your spark plug and crew in the line with gauge...and crank up the car. Some people just spin it over, but I like for the car to be running. Crank it up and go look at the gauge...note it, shut the car off and repeat with all cylinders. Be sure to put the plugs back in each one after your finished lol.

 

[registered]

lol, indeed. Man, I can do this myself!

Thanks for the reply.

 

[DerekStangGT]

Yep, that looks fine...good thing to do with a S/Cd motor.
You can go to autozone and buy a compression tester...pull your spark plug and crew in the line with gauge...and crank up the car. Some people just spin it over, but I like for the car to be running. Crank it up and go look at the gauge...note it, shut the car off and repeat with all cylinders. Be sure to put the plugs back in each one after your finished lol.

hm, its been a while since ive run a comp test, but dont you need to disable the fuel system in order to run this test? when you start the car w/o the plug in the combustion chamber, youre dumping air and fuel into the chamber and its not getting burned i was taught to pull the fuel system fuse, and crank the engine no more than 5-6 times so you dont burn up the starter. note the guage while cranking. its been a good year since ive done one, but thats what i seem to remember

 

[haneymotorsport]

DerekstangGt-
You are correct. I would never do a comp. test by starting and running the engine. For an injected engine, I would disable the inertia switch. Some people test with wot and some with a closed thottle. Cold engine and hot engine.
Jivepepper-
Those numbers look pretty good for a cold engine. They are also well within a 10% variance.