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

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Old 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-17-2010, 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 11-18-2010, 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 11-18-2010, 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 11-18-2010, 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 11-18-2010, 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 11-20-2010, 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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