Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

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Old Nov 17, 2010 | 08:26 PM
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Default 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

So I have a 94 del sol with a b-16 and just did a compression test. It came up between 165 and 175 psi. The motor has 243 thousand miles. Is that good compression or what?
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Old Nov 17, 2010 | 08:28 PM
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Default Re: 94 del sol with b-16

did you do your test with the throttle body wide open??
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Old Nov 17, 2010 | 08:30 PM
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Default Re: 94 del sol with b-16

Originally Posted by Deetz
did you do your test with the throttle body wide open??
10 bucks says he replies with "no"
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Old Nov 17, 2010 | 08:31 PM
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Default Re: 94 del sol with b-16

It was just turning key nothin else
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Old Nov 17, 2010 | 08:35 PM
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Default Re: 94 del sol with b-16

Originally Posted by acdelcosol
It was just turning key nothin else
try again while holding throttle wide open while turning over
numbers will change
promise.
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Old Nov 17, 2010 | 08:37 PM
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Default Re: 94 del sol with b-16

Should it increase or decrease?
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Old Nov 17, 2010 | 08:38 PM
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Default Re: 94 del sol with b-16

increase.
chances are you'll be good with it
post numbers after you do that.
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Old Nov 17, 2010 | 08:58 PM
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Default Re: 94 del sol with b-16

Sounds good. I figured with the amount of miles on the motor it would be less then that but I was pretty shocked.
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Old Nov 18, 2010 | 05:40 PM
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Default Re: 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

The engine should be warm too.
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Old Nov 18, 2010 | 06:44 PM
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Default Re: 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

What does holding the throttle WOT do? I know it cancels injectors (well on Fords, atleast).
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Old Nov 18, 2010 | 06:58 PM
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Default Re: 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

Originally Posted by ManicMike
What does holding the throttle WOT do? I know it cancels injectors (well on Fords, atleast).
It gives you an accurate reading plus it fills the cylinders much faster . The last thing you want is numbers all over the place. It is the PROPER way of doing a compression test.
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Old Nov 18, 2010 | 07:05 PM
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Default Re: 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

The throttle angle directly affects the cylinder pressure when the intake valves close, so it'll affect your cranking pressure too.
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Old Nov 20, 2010 | 01:32 PM
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Default Re: 94 del sol/B16 with 165-175 psi cylinder compressions - Is this good?

The engine was warm I did the cylinder closest to the distributor first it was 175 second was 173 third was 168 and 4th was 165.
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