So... I was running a boost leak test... and .... something weird happened... im not sure what it means, but oil started to come out of my dip stick... i was pretty scared..... what does this mean?

helpful info:

*ecotec, built recently
*i have a catch can hooked up from the manifold to the pcv vavle and a check vavle hooked up so bosot doesnt shoot into the vavle cover, but i removed this and tried again and boost came up
*my friend told me a piston could have not sealed, but i ran a compression test and i got even numbers across the board, thank god
*car runs GREAT, absolutely great... i ran a 13.2 ( My Post in the Racing Forum) last night and it doesnt make any weird noises AT ALL!!! I actually fixed a leak that my old manifold had and now its running even better then ever
*boost leak test .... i have no clearance on the intake side of the turbo, so i put the adapter on the charge pipe right where it normally connects to the compressor housing and hooked up a air compressor to it while my friend read the boost level to me.... by the time it reached 10psi the oil was dripping out of the dip stick and we stopped
* the next time i started the car it smoked like crazy and then it stopped after like 3 minutes and now the car runs great again with no problems

any help is appreciated!! Thanks




|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

Acer wrote:
*i have a catch can hooked up from the manifold to the pcv vavle and a check vavle hooked up so bosot doesnt shoot into the vavle cover, but i removed this and tried again and boost came up
/quote]

i meant oil, oil came up


anyways... anyone know why oil would be coming out of the dip stick when i do a boost leak test?, I did a compression test on all of the pistons and they all read the same number, so i know my piston seals are not leaking... anyone else have a clue? Thanks!



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

oil comes out of my dip stick when i do a boost leak test. Am I the only one with this problem? EVER!! ??

any one got anything for me?



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

i think you have a case of blow by.

i would try a leak down or a compression check. leak down will tell you mroe.

obviously air is getting past the piston rings, pressurizing the crank case and causing the oil to come out.

if you leave the valve breather open so the pressure can come out there, rather than the oil dipstick can you hear it when u pressurize it?

leak down will say more.


farmerz24

leak down test.... what is that? what can it determine? because... i did a compression test and i got 210 across the board.... so i dont know if the piston rings are leaking, i doubt it... but it was just recently built

i had a catch can hooked up from the manifold to the pcv vavle with a check vavle so boost doesnt enter the pcv vavle.... i have that unistalled now and i have a breather on the pcv vavle (i dont have a intake pipe, the filter is on the turbo directly...for now)

blow by? what does that mean?

I was COMPLETELY STUMPED when i noticed air getting to the oil pan and out the dip stick from the head and through the pistons... so i ran a compression test and that checked out good, so then i was even more stumped.... then i started thinking... when you add oil to the car, you add it in the vavle cover, and some how it gets from there, to the oil pan, i think the air is taking that route.... what normally stops air from getting through on leak tests but not oil? might i have a bad head? would a leak down test tell me that?

Thanks! Took long enough for someone to answer i usually get an answer fast as hell, i was starting to think no one had an answer



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

http://en.wikipedia.org/wiki/Leak-down_tester

i just researched a leak down tester... apparently it does pretty much what a compression test does except it can let you know where its comming from and how bad it is?? well... after reading that page on wiki pedia, i didnt see anything mentioned about oil leaking or thing about oil system.... are you sure this is the test i need?



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

do a leak down test...... it pressurizes the cylinder with al the valves close and tells you the percent thats leaking out, if its leaking it tell you where its leaking form, if air is coming out the dipstick stick chnces are the rings are junk on that cylinder, if its coming out the exhaust or intake you prolly have a bent valve ect.. just do the leak down

i hope its not the piston rings, i just had the motor built

i did a compression test and got 210 across the board and no reaction from the oil system...

leak down test is getting done this week for sure



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

compression test is more or less useless, it will tell you how much compression there is and nothign else, the only thing it tells you is if there is a MAJOR problem and to to compare the actual cylinders. When you have an actual problem a compression test will not help you find it, a cylinder leak down test will. Rather then telling you how much its compressing it tells you how much is leaking out of the cylider and where its leaking out, which is far more important when it comes to finding the problem then a compression test.

your crank case should not be seeing boost, my quess is the rings didn't seal on one or more cylinders, or you have a vavle cover breather hose hooked up seeing boost. there are the most liley causes.

Darkstars wrote:compression test is more or less useless, it will tell you how much compression there is and nothign else, the only thing it tells you is if there is a MAJOR problem and to to compare the actual cylinders. When you have an actual problem a compression test will not help you find it, a cylinder leak down test will. Rather then telling you how much its compressing it tells you how much is leaking out of the cylider and where its leaking out, which is far more important when it comes to finding the problem then a compression test.

your crank case should not be seeing boost, my quess is the rings didn't seal on one or more cylinders, or you have a vavle cover breather hose hooked up seeing boost. there are the most liley causes.

you are like the only person in the world with senarios!!! I really appreciate it man!!

well... for the rings to be the problem .... they would all have to be leaking the same amount, evenly, and slow as hell... because they all held 210 for a good 30 seconds while i cranked and checked the numbers and stuff before i released the pressure...

is it possible for the leak to be in the other direction?? in from the intake manifold and up through the head into the crank case? and then down through the oil drains? (if the pcv vavle was closed, catch can... im an idiot)???? im thinking thats what happened.... but would that mean that my head is messed up? or is it normal for pressurized air to seep up through the head into the crank case? even in really small amounts of air?

p.s. I disconnected the catch can and tried again and it happened again... so i dont know what to think...



|Forged 8.9:1 Wiseco Pistons|Forged Eagle Rods|HPTuners|60trim|Tial Wastegate|
|Precision Intercooler|2.5" Exhaust|2.5" Charge Pipes|630CC Mototron Injectors|
|Stock: Fuel Pump, Transmission, Manifold, TB, Head, Head Gasket, Ignition, Suspension...|

dude, i think if you do a compression test then unscrew the comp. tester it will still read 210.

the leakdown test is the answer, if one cyl is shot it will cause this. it leaks past the rings into the case.

if the head was shot the only way it could leak through there is through the valve guides, cause if it leaks past the valve/head seat itself it will only enter the intake system, not the head.

so my guess is probably the rings..




farmerz24

Acer, I hate to say it but it SOUNDS like your rings are shot (1 or more). When boost pressurizes the crank case it'll push the oil dipstick out, amongst other things.

I know it's a brand new motor, it leads me to ask a few fast questions:

How many k's did you break it in?

How many k's did you break it in before you boosted?

It seems to me that either your rings didn't seat or didn't seat properly, and now they are letting crap past them. As mentioned you need to do a leakdown test to pinpoint WHAT cylinder has the fault and to figure out what it is.... then you can fix the situation.

I know it's a really poor situation to be in but it does happen. This is why break-in is EVERYTHING.

Good luck man.

-Chris-



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