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..

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.


95 Eclipse RS : 5 speed
15.7 @ 87.9mph
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

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

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

Thanks !

Get a different compression tester, one that works.

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,

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

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.........