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Subject: "Leakdown test questions..." Previous topic | Next topic
jdpilotJun-22-04 01:59 PM
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#76483, "Leakdown test questions..."


          

So, as I stated in a previous post I have compression numbers of 100 psi across all four cylinders (the bright side, they are consistant,lol) I am trying to narrow down if its just my Headgasket. If I perform a leak down test, a couple questions;

-How much oil should I drip in each cylinder before re-checking compression whne the engine is hot? A drop?? A capful??? Confused here...

-Let me know if I am correct here. If the PSI remains unchanged during a leakdown, its definately the headgasket?? If it goes up, its the rings??? Are there any other possibilities?? Thanks.

I am hoping for it to remain the same so I can just be concerned about the HG, We will see though and I will cross my fingers. Thanks in advance..


Second Place "Sanford Sound SLAP 2005" Mild 2-Door
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1995 GS AT, 97-99 Conversion.
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Replies to this topic
RE: Leakdown test questions..., TeamMetalJim, Jun-22-04 03:43 PM, #1
RE: Leakdown test questions..., Global Ruler Of All ThingsDarkOne, Jun-22-04 04:08 PM, #2
      RE: Leakdown test questions..., jdpilot, Jun-23-04 12:51 AM, #3
      RE: Leakdown test questions..., thedawg, Jun-23-04 09:40 AM, #4
      RE: Leakdown test questions..., Blizare, Nov-17-04 07:58 AM, #5
           RE: Leakdown test questions..., RickyMeeses, Nov-17-04 08:04 AM, #6
                RE: Leakdown test questions..., AdministratorStar Turbo Talon, Nov-17-04 09:18 PM, #7

TeamMetalJimJun-22-04 03:43 PM
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#76484, "RE: Leakdown test questions..."
In response to Reply # 0




          

I use a capfull.

If the pressure goes up on the wet test then your rings are wearing. If it doesn't it means that either the headgasket is leaking or you need a valvejob.


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Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

  

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Global Ruler Of All ThingsDarkOneJun-22-04 04:08 PM
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#76486, "RE: Leakdown test questions..."
In response to Reply # 1
Jun-22-04 04:14 PM by DarkOne



          

For the record, that is a wet compression test, NOT A LEAKDOWN!

http://www.morrowmarsh.ca/concours/techpages/leakdowntester.htm

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jdpilotJun-23-04 12:51 AM
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#76488, "RE: Leakdown test questions..."
In response to Reply # 2


          

Thanks !


Second Place "Sanford Sound SLAP 2005" Mild 2-Door
http://www.sanfordsound.com/carwash2005.htm
Second Place "Scrapefest 2002" 2nd Gen Mild
1995 GS AT, 97-99 Conversion.
2000 BMW Z3 2.8
1999 Chevy K2500 crew cab
5 jets skis, 3 snowmobiles, 2 ATVs. BRAAP!
Member # 1147

  

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thedawgJun-23-04 09:40 AM
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#76503, "RE: Leakdown test questions..."
In response to Reply # 3


          

Get a different compression tester, one that works.

  

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BlizareNov-17-04 07:58 AM
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#82789, "RE: Leakdown test questions..."
In response to Reply # 2




          

Originally posted by DarkOne
For the record, that is a wet compression test, NOT A LEAKDOWN! http://www.morrowmarsh.ca/concours/techpages/leakdowntester.htm


woah.

Good info Dino,


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OldGuyNov-17-04 08:04 AM
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#82790, "RE: Leakdown test questions..."
In response to Reply # 5


          

As well...
1. Bubbles in radiator= HG
2. Air out of throttle body=leaking intake valves
3. Air out of exhaust=exhaust valves
4. air out of dipstick tube=Rings
To identify problem from results of loss of air on Leakdown test

So now at 44 what the hell do I do?

  

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AdministratorStar Turbo TalonNov-17-04 09:18 PM
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#82799, "RE: Leakdown test questions..."
In response to Reply # 6
Nov-17-04 09:19 PM by Star Turbo Talon



          

Originally posted by RickyMeeses
As well... 1. Bubbles in radiator= HG
2. Air out of throttle body=leaking intake valves
3. Air out of exhaust=exhaust valves
4. air out of dipstick tube=Rings
5. air leak in ear=leaking ear drum (hot air)
To identify problem from results of loss of air on Leakdown test




96 Eagle Talon ESI....Daily driver

97 Eclipse.........

  

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