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What are your compression numbers?
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Author Topic: What are your compression numbers?  (Read 202 times)
Sebastian
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What are your compression numbers?
« on: August 12, 2008, 03:11:09 PM »
Just wondering what everybody else is getting for your 420A engine. This is a standard dry compression test.

After a head gasket change I am at 160 PSI on all 4 cylinders.

This is on an 100K mile engine from a 95 Avenger.

What are your numbers?
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Shiano
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Re: What are your compression numbers?
« Reply #1 on: August 12, 2008, 09:25:14 PM »
well, you're supposed to have 170-255.
After i have the fuel filter replaced on mine, i'm seriously thinking about having the compression checked. Somethings just not right with it.
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william coppage
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Re: What are your compression numbers?
« Reply #2 on: August 13, 2008, 01:05:30 AM »
your good if you got 100k and 160 across the board
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maybe ill get to drive it one summer lol
Shiano
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Re: What are your compression numbers?
« Reply #3 on: August 13, 2008, 05:31:45 AM »
hmm. i'll have to keep that in mind.
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william coppage
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Re: What are your compression numbers?
« Reply #4 on: August 13, 2008, 09:18:23 PM »
well as you add milage thing wear like your piston rings which will lower your compression if you got really low like 120 on a cyl then you got a prob. i say 160 at 100k has been pretty well taken care of engine
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Shiano
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Re: What are your compression numbers?
« Reply #5 on: August 14, 2008, 06:36:13 AM »
The rings, pistons and head are supposed to be less than 15k miles old. The car practically had a new head job when i got it.
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william coppage
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Re: What are your compression numbers?
« Reply #6 on: August 14, 2008, 09:55:48 AM »
you have issues with it though dont you shiano I would say either its not done right or they lied to you
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Shiano
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Re: What are your compression numbers?
« Reply #7 on: August 14, 2008, 11:11:03 AM »
well, i don't THINK it's compression issues... but i'm not ruling it out.
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william coppage
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Re: What are your compression numbers?
« Reply #8 on: August 28, 2008, 10:17:22 AM »
lolz i feel for you bro
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maybe ill get to drive it one summer lol
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