Go Back   Honda-Tech > Honda and Acura Model-Specific Technical Forums > Honda Prelude
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 11-19-2008, 04:38 PM   #1
JBirch_97Prelude
Honda-Tech Member
Garage is empty, add now
 
JBirch_97Prelude's Avatar
 
Join Date: Nov 2005
Location: Mechanicsburg, PA, Cumberland
Posts: 684
iTrader Rating: (0)
Send a message via AIM to JBirch_97Prelude
Icon2 How to check for bent valves.

I have decided to take my car out of the shop where it's been for weeks without progress. I was originally told that I had bent valves so I am wondering how to check which valves are bent so I can have them replaced. The new head was put on and I was told that compression was to low and that they needed to do a leak down test. I thought the only way to check compression was with a leak down test. Anyway if there is low compression what good would a leak down test do.

Any help would be greatly appreciated!
__________________
1997 Honda Prelude
2009 Honda Fit Sport
JBirch_97Prelude is offline   Reply With Quote
Old 11-19-2008, 04:55 PM   #2
ethereal2pt2
Member
Garage is empty, add now
 
ethereal2pt2's Avatar
 
Join Date: Jul 2006
Location: Seattle, WA
Posts: 1,184
iTrader Rating: (0)
Default

well how low is low? if you have bent valves, that cylinder shouldnt' be able to hold very much pressure if at all. that and the engine would run like **** and you would KNOW. my guess is that you don't but w/o more info can't say for sure.
__________________
'98 Honda Prelude

Quote:
Originally Posted by satan_srv

I just call them hookers, cause no matter how you go about it, you're paying for women all your life.
ethereal2pt2 is offline   Reply With Quote
Old 11-19-2008, 05:34 PM   #3
JBirch_97Prelude
Honda-Tech Member
Garage is empty, add now
 
JBirch_97Prelude's Avatar
 
Join Date: Nov 2005
Location: Mechanicsburg, PA, Cumberland
Posts: 684
iTrader Rating: (0)
Send a message via AIM to JBirch_97Prelude
Default

Quote:
Originally Posted by ethereal2pt2 View Post
well how low is low?
Low hundreds! How could compression be checked without a leak down test!
__________________
1997 Honda Prelude
2009 Honda Fit Sport
JBirch_97Prelude is offline   Reply With Quote
Old 11-19-2008, 06:49 PM   #4
jay24k
Honda-Tech Member
Garage is empty, add now
 
jay24k's Avatar
 
Join Date: Feb 2006
Location: Fruitland Park, FL, USA
Posts: 166
iTrader Rating: (0)
Default

Why not just do your own compression test? You can tell which ones are having issue that way.
jay24k is offline   Reply With Quote
Old 11-19-2008, 08:55 PM   #5
ethereal2pt2
Member
Garage is empty, add now
 
ethereal2pt2's Avatar
 
Join Date: Jul 2006
Location: Seattle, WA
Posts: 1,184
iTrader Rating: (0)
Default

personally i've experienced bent valves and let me tell you even an, excuse me, retard would know that he had bent valves. your engine would run very very rough especially at idle. if you're pondering this, most likely you don't have bent valves. but a leak down test would help to indicate where your engine is at in terms of health. just got to autozone and borrow their kit. do it yourself.
__________________
'98 Honda Prelude

Quote:
Originally Posted by satan_srv

I just call them hookers, cause no matter how you go about it, you're paying for women all your life.
ethereal2pt2 is offline   Reply With Quote
Old 11-19-2008, 09:05 PM   #6
95greenlude
Honda-Tech Member
Garage is empty, add now
 
95greenlude's Avatar
 
Join Date: Dec 2004
Location: Las Vegas, NV
Posts: 2,910
iTrader Rating: (0)
Send a message via AIM to 95greenlude
Default

^your car wont necessarily run bad if you have bent valves. If their slightly bent, there's a good chance you wont even notice.

A compression test will tell you if your motor is in good health and holds compression in the combustion chamber.

A leak down test will tell you WHAT is not healthy in your engine, and where compression isn't being held
__________________
Jared -'99 Jeep Cherokee Sport
SOLD - 95 Prelude SE
95greenlude is offline   Reply With Quote
Old 11-20-2008, 01:05 AM   #7
dagle
Honda-Tech Member
Garage is empty, add now
 
dagle's Avatar
 
Join Date: Sep 2006
Location: San Francisco, CA, US
Posts: 5,156
iTrader Rating: (1)
Send a message via AIM to dagle
Default

well OP did specify that he got compression test results of low 100's.. which indicates that something is definately wrong.. if it isn't the head, it sounds to me like your block is the problem. however, as mentioned we cannot tell you over the interweb with the information given. get back to us with the info we're looking for and we can help you out.
__________________
To Mislead and Misinform...
dagle is offline   Reply With Quote
Old 11-20-2008, 03:03 AM   #8
JBirch_97Prelude
Honda-Tech Member
Garage is empty, add now
 
JBirch_97Prelude's Avatar
 
Join Date: Nov 2005
Location: Mechanicsburg, PA, Cumberland
Posts: 684
iTrader Rating: (0)
Send a message via AIM to JBirch_97Prelude
Default

Quote:
Originally Posted by dagle View Post
well OP did specify that he got compression test results of low 100's.. which indicates that something is definately wrong.. if it isn't the head, it sounds to me like your block is the problem. however, as mentioned we cannot tell you over the interweb with the information given. get back to us with the info we're looking for and we can help you out.
That's the thing, I don't know what info i'm getting back is true or not so I am thinking about taking it out of the shop and working on it myself!
__________________
1997 Honda Prelude
2009 Honda Fit Sport
JBirch_97Prelude is offline   Reply With Quote
Old 11-20-2008, 04:36 AM   #9
Acidcrakker
Honda-Tech Member
Garage is empty, add now
 
Acidcrakker's Avatar
 
Join Date: Aug 2007
Posts: 3,892
iTrader Rating: (0)
Default

I remember your post from a while back. Its a shame that no one has even done anything to fix it yet, that was a while ago.

Im not that far away from where you are, and I do make local calls when someone needs a hand with stuff. I can come over there, take your head off and take it to a machine shop that can competently install new valves for you.
__________________
Jim- 13.9 @ 103 mph
Don't crimp bitch
Acidcrakker is offline   Reply With Quote
Old 11-20-2008, 06:14 AM   #10
JBirch_97Prelude
Honda-Tech Member
Garage is empty, add now
 
JBirch_97Prelude's Avatar
 
Join Date: Nov 2005
Location: Mechanicsburg, PA, Cumberland
Posts: 684
iTrader Rating: (0)
Send a message via AIM to JBirch_97Prelude
Default

Quote:
Originally Posted by Acidcrakker View Post
I remember your post from a while back. Its a shame that no one has even done anything to fix it yet, that was a while ago.

Im not that far away from where you are, and I do make local calls when someone needs a hand with stuff. I can come over there, take your head off and take it to a machine shop that can competently install new valves for you.
The head is off! I am picking it up today but I don't think they are all bent! Unless you suggest I replace them all. When do you think you can come by, I will pay you for your time!
__________________
1997 Honda Prelude
2009 Honda Fit Sport
JBirch_97Prelude is offline   Reply With Quote
Old 11-20-2008, 08:09 AM   #11
Acidcrakker
Honda-Tech Member
Garage is empty, add now
 
Acidcrakker's Avatar
 
Join Date: Aug 2007
Posts: 3,892
iTrader Rating: (0)
Default

Well if the head is off. Than checking each cylinders valve is going to be a bit of a hassel, I can pick the head up have it inspected for damages other than bent valves, have it fixed, then reinstall the freshly revalved head for you. And you should be good to go.

I can come out Saturday some time.

Send me a PM so we can iron out the details.
__________________
Jim- 13.9 @ 103 mph
Don't crimp bitch
Acidcrakker is offline   Reply With Quote
 
 
 
submit to reddit
Reply

Tags
95, acura, bent, check, engine, fix, honda, integra, machine, prelude, run, seattle, shop, slightly, symptoms, valve, valves

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 12:05 PM.



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