PCM & Fuel Systems Talk about the powertrain control module, fuel systems and delivery, customization and more.

compression test results??

Old Mar 15, 2008 | 12:02 PM
  #1  
newguy2007's Avatar
Thread Starter
|
Member
Joined: Sep 2007
Posts: 88
Default compression test results??

alright i did my compression test. But this was the strange thing: i know when the rings are worn you have like 3 good cylinders and 1 bad one and then do the wet test and see if it comes up. I did mine and ALL the cylinders were like 150-151. They all matched. So i did the wet test anyway on one and it ended up reading 180 so it raised like 20psi.

Does it sound like my rings??
 
Old Mar 15, 2008 | 12:09 PM
  #2  
Sebba's Avatar
Banned
Joined: Feb 2006
Posts: 16,176
From: Austin, TX
Default RE: compression test results??

Rings, yup.

What engine is this?
 
Old Mar 15, 2008 | 12:19 PM
  #3  
newguy2007's Avatar
Thread Starter
|
Member
Joined: Sep 2007
Posts: 88
Default RE: compression test results??

i have the turbo eclipse gst. 1997 actually what is the engine in it. I know its a 2.0.

Anyway, so the rings are definatly gone even though all cylinders were the same? Also do you think this would explain my lack of boost, smoke from my car, and smoke from my vents?
 
Old Mar 15, 2008 | 12:28 PM
  #4  
TheEngineer's Avatar
Super Moderator
Joined: Jan 2006
Posts: 11,758
From:
Default RE: compression test results??

standard compression on those cars is supposed to be 178psi. However the service limit on them is 133psi. So you are not at the point yet where you need to think about rebuilding the motor or anything. And since there wasnt any that were really low i dont see anything in there that says you need new rings. Also nothing points toa head gasket but usually the smoke through the vents is a head gasket issue which is what is confusing me. You could have possibly blown a head gasket on the outer part of it but i would think youd notice the leak in the engine bay.

Do you notice any loss of coolant. The problem could possibly be the turbo is shot. Take the intake off and check the small shaft in the center of the wheel for any movement in/out and left/right
 
Old Mar 15, 2008 | 12:28 PM
  #5  
dsm1990gsx's Avatar
Super Moderator
Joined: Oct 2007
Posts: 4,682
From: Pa
Default RE: compression test results??

Deff sounds like bad rings, it explains a lot of your symptoms.
 
Old Mar 15, 2008 | 01:04 PM
  #6  
newguy2007's Avatar
Thread Starter
|
Member
Joined: Sep 2007
Posts: 88
Default RE: compression test results??

well now im really confused. Should i change the rings or the head gasket or run it how it is ( i dont want to do that because the smoke and stalling is pissing me off) or get a leak down test??????
 
Old Mar 15, 2008 | 01:34 PM
  #7  
TheEngineer's Avatar
Super Moderator
Joined: Jan 2006
Posts: 11,758
From:
Default RE: compression test results??

Like i said you are not even close to service limit on that car. Its what happens when a car gets old, you wont have perfect compression. But you dont need to change them IMHO
 
Old Mar 15, 2008 | 01:42 PM
  #8  
EMonz57's Avatar
Senior Member
Joined: May 2005
Posts: 12,084
Default RE: compression test results??

ORIGINAL: TheEngineer

Like i said you are not even close to service limit on that car. Its what happens when a car gets old, you wont have perfect compression. But you dont need to change them IMHO
Yes an no, John you have to factor in the #s may also be a little higher because of carbon build up. Most motors when they get old read higher compression than they actually are holding because carbon.
 
Old Mar 15, 2008 | 03:34 PM
  #9  
newguy2007's Avatar
Thread Starter
|
Member
Joined: Sep 2007
Posts: 88
Default RE: compression test results??

so what about the smoke and stalling. I cant keep driving like that. I cant even use my boost and thats what i bought the car for.
 
Old Mar 15, 2008 | 05:34 PM
  #10  
TheEngineer's Avatar
Super Moderator
Joined: Jan 2006
Posts: 11,758
From:
Default RE: compression test results??

I would check the turbo and make sure that is running properly. Look for shaft play
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
angelogts09
Mitsubishi Mirage
0
Oct 20, 2012 03:17 PM
Bymp
2nd Generation
4
Aug 1, 2010 05:10 PM
grim0reaper0
2nd Generation
15
Aug 27, 2007 11:37 PM
ryant25bb
Nitrous, Super Chargers, & Turbos
3
Oct 16, 2006 09:35 AM
ryant25bb
Nitrous, Super Chargers, & Turbos
2
Oct 12, 2006 12:54 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:15 AM.