Go Back   Honda-Tech > Honda and Acura Model-Specific Technical Forums > Honda CRX / EF Civic (1988-1991)
Sign in using an external account
Register Forgot Password?
Search


Welcome to Honda-Tech!
Welcome to Honda-Tech.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Honda-Tech community today!


Reply
 
 
 
submit to reddit
 
Thread Tools Search this Thread
Old 10-24-2007, 01:02 PM   #1
JasonST
Honda-Tech Member
Garage is empty, add now
 
JasonST's Avatar
 
Join Date: Jan 2006
Location: Ferndale, WA, USA
Posts: 1,276
iTrader Rating: (0)
Send a message via AIM to JasonST
Default No compression in 1 cylinder. Need help

so I've finely found out why my 90 civic isn't running right ever since I got it 2 weeks ago... Did all maintenance on it spent lots of $ to find out today all the cylinders were 180 psi except cylinder #2 which was 10 psi... I did a leakdown test but to no avail, the cylinder stayed at 10 psi, so I'm guessing this is because of a broken or burnt valve? If so, how hard is this to replace, I got my teg I'm using for daily driving so time isn't an issue... But can I replace the valve by myself with basic hand tools or do I need a machine shop to do it, and if so, how much? Thanks!
__________________
00 Ap1 Berlina Black s2000
98 Integra Gsr- H22a, I/H/E.

Quote:
Originally Posted by Finest
VTEC makes everything possible.
JasonST is offline   Reply With Quote
Old 10-24-2007, 02:21 PM   #2
Tippyman
Honda-Tech Member
Garage is empty, add now
 
Tippyman's Avatar
 
Join Date: Jul 2004
Location: VA, USA
Posts: 9,807
iTrader Rating: (0)
Default Re: No compression in 1 cylinder. Need help (JasonST)

Why did you say the leakdown failed?

It's a test, it can't really fail. Do you know how to do a leakdown test? If you don't have compression, a leakdown test will tell you where you're losing compression.
__________________
-05 Jeep / Wheeler
-91 Civic / Turbo'd destroyer of low flying animals
Tippyman is online now   Reply With Quote
Old 10-24-2007, 05:08 PM   #3
JasonST
Honda-Tech Member
Garage is empty, add now
 
JasonST's Avatar
 
Join Date: Jan 2006
Location: Ferndale, WA, USA
Posts: 1,276
iTrader Rating: (0)
Send a message via AIM to JasonST
Default Re: No compression in 1 cylinder. Need help (Tippyman)

I didn't say it failed, just said to no avail, it didn't raise compression so as far as I know that means the valves are the culprit correct? Plz correct me if i'm wrong. Bump.
__________________
00 Ap1 Berlina Black s2000
98 Integra Gsr- H22a, I/H/E.

Quote:
Originally Posted by Finest
VTEC makes everything possible.
JasonST is offline   Reply With Quote
Old 10-24-2007, 05:12 PM   #4
Tippyman
Honda-Tech Member
Garage is empty, add now
 
Tippyman's Avatar
 
Join Date: Jul 2004
Location: VA, USA
Posts: 9,807
iTrader Rating: (0)
Default Re: No compression in 1 cylinder. Need help (JasonST)

A leakdown test doesn't raise the compression.

Let's say that you do a compression test and one cylinder is down. (Like your scenario.) That sucks, but you have no idea where the engine has gone bad. A leakdown will pinpoint it for you. You zero the dial, fill the cylinder with air, and the guage will read a percentage of leakdown.

Ex. - You have 100 psi and 90% leakdown. That means that the leakdown tester filled the cylinder with 100 psi of air, but 90 psi is escaping somewhere. Then, you listen to the throttle body, radiator cap, crankcase, exhaust tip, etc. to hear where it's coming from.
__________________
-05 Jeep / Wheeler
-91 Civic / Turbo'd destroyer of low flying animals
Tippyman is online now   Reply With Quote
Old 10-24-2007, 08:00 PM   #5
JasonST
Honda-Tech Member
Garage is empty, add now
 
JasonST's Avatar
 
Join Date: Jan 2006
Location: Ferndale, WA, USA
Posts: 1,276
iTrader Rating: (0)
Send a message via AIM to JasonST
Default Re: No compression in 1 cylinder. Need help (Tippyman)

Ah ok that makes a lot more sense than how I've had that explained to me... Thanks, guess I'll do more diagnosing in the morning. So when I did the leakdown test the compression didn't go up at all, still at about 10 psi... What sound am I looking for when I'm suppose to be listening to the places u mentioned above? Thanks.
__________________
00 Ap1 Berlina Black s2000
98 Integra Gsr- H22a, I/H/E.

Quote:
Originally Posted by Finest
VTEC makes everything possible.
JasonST is offline   Reply With Quote
Old 10-25-2007, 05:28 PM   #6
Tippyman
Honda-Tech Member
Garage is empty, add now
 
Tippyman's Avatar
 
Join Date: Jul 2004
Location: VA, USA
Posts: 9,807
iTrader Rating: (0)
Default Re: No compression in 1 cylinder. Need help (JasonST)

http://www.geocities.com/dsmgr...HowTo

and a more honda specific one: http://www.honda-tech.com/zerothread?id=1863822
__________________
-05 Jeep / Wheeler
-91 Civic / Turbo'd destroyer of low flying animals
Tippyman is online now   Reply With Quote
 
 
 
submit to reddit
Reply

Tags
100, 91, 95, accord, acura, civic, compression, crv, cylinder, gsr, honda, integra, psi, s2000, test

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -8. The time now is 03:18 AM.



2008 Copyright, InternetBrands Inc.
Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.
Emails & Contact Details