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what is the proper way to do a boost leak test on a galant vr4


kooter
Member
148/2000


Galant VR-4 org Post #: 977836 posted 03/18/11 03:05 PM     Remind Me!  Send Private Message   Edit Post      
So I had an earlier post about turbo not spooling correctly.
I have this tester and am ready to use it.
if I am understanding this correctly that I disconnect the inlet side of the turbo strap this on
here is my question.
don't I need to plug the end that is no longer connected to the turbo ?



Edited by kooter (03/18/11 03:36 PM)

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ktmrider
Cool Guy Crowd


Galant VR-4 org Post #: 977859 posted 03/18/11 04:23 PM     Remind Me!  Send Private Message   Edit Post      
click

Look under the Intake section at the bottom ( Leak Tester ).

VFAQ should be read and re-read, it's the ABC's for our generation vehicles.



Mike O.
#464/1000 - Sold
05 Legacy GT - 6MT swap
#86/2000 - Sold ( again )

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kooter
Member
148/2000


Galant VR-4 org Post #: 977862 posted 03/18/11 04:36 PM     Remind Me!  Send Private Message   Edit Post      
thank you

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Red_Bird
Unregistered


Galant VR-4 org Post #: 977863 posted 03/18/11 04:41 PM     Remind Me!  Send Private Message   Edit Post      
There for a second I thought that was a Hyundai Genuine boost leak tester.

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kooter
Member
148/2000


Galant VR-4 org Post #: 977868 posted 03/18/11 05:01 PM     Remind Me!  Send Private Message   Edit Post      
no just a hyundai part I work at a dealership in parts

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FlyingEagle
Doesn't Match Anything


Galant VR-4 org Post #: 977877 posted 03/18/11 06:09 PM     Remind Me!  Send Private Message   Edit Post      
Make sure you regulate the air pressure being applied. Don't allow full compressor shop air to pressurize those poor tiny oil seals in the intake system. Regulate down to 20 PSI and you will be fine.



C53A 1 of the ~1500

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kooter
Member
148/2000


Galant VR-4 org Post #: 977910 posted 03/18/11 09:53 PM     Remind Me!  Send Private Message   Edit Post      
So just finished
put leak tester on turbo inlet and started with going up to 5 psi needle on the guage went quickly to 5 and dropped steadily back down I would say around one psi a second maybe a little faster but it went up and went down.

definately heard some hissing but it was very faint. spray bottle filled with soapy water sprayed around while.
kept the guage right around the 5 mark, tring to locate the leak. more spraying moved up to between 8 and ten on the guage and found the tiniest of little bubble




right at the top of this tube.

sorry I didn't have my camera to take pictures at the time.

So my question here and the reason for this boost test was that at around 4500 rpm the cars starts to stutter pretty bad. I was told it was a turbo leak. from what I have read and what I can tell the system is holding pressure.

other then that the car runs fine.
any new suggestions?

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beaner
Blew1 Guy Today


Galant VR-4 org Post #: 977914 posted 03/18/11 10:10 PM     Remind Me!  Send Private Message   Edit Post      
That's typically from bad plugs/wires.

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kooter
Member
148/2000


Galant VR-4 org Post #: 977934 posted 03/18/11 11:56 PM     Remind Me!  Send Private Message   Edit Post      
plugs and wires have less then 2000 miles. They were done right before I bought the car. I have a new set of plugs and wires from mitsu that I will put on in about two weeks. so we shall see how that goes.currently I only drive the car about 20 miles every other week. trying to do all the repairs before I make it my daily driver.



1991 galant vr4 nile black
JDM Transplant. 16g 510 injecters
102,000 miles

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Dan D
220, 221... whatever it takes
410/2000


Galant VR-4 org Post #: 978263 posted 03/20/11 09:25 AM     Remind Me!  Send Private Message   Edit Post      
Worn out tps can also cause a hesitation similar to faulty wires. If you have a logger, check and make sure the throttle position is linear and smooth through the range.



#410/2k

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1990ggsxnj
Member ++
1578/2000


Galant VR-4 org Post #: 978528 posted 03/21/11 12:52 PM     Remind Me!  Send Private Message   Edit Post      
I was going to say that as well but he states it happens when it is WOT at a specific RPM and goes away if he increases throttle slowly. Sounds like that might rule it out (never completely until it's resolved though).



"Is that Spool Drool? EWW!"
90GGSX Blue-Chesapeake
91GVR4 Nile Black-Sidney (Sid)

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 978864 posted 03/22/11 04:59 PM     Remind Me!  Send Private Message   Edit Post      
+1 on tps sensor mines bad and is causing studdering at higher rpms..



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 978865 posted 03/22/11 04:59 PM     Remind Me!  Send Private Message   Edit Post      
+1 on tps sensor mines bad and is causing studdering at higher rpms..
And if you keep your foot on it slowly its somtimes doesent studder..



~turbohair~

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dsmtalontsi95
Herdgate
1902/2000


Galant VR-4 org Post #: 979073 posted 03/23/11 11:58 AM     Remind Me!  Send Private Message   Edit Post   
It looks like you have the breather tube circle. Is the one leaking the large one coming from the valve cover or was it one of the ones on the throtle body? Did you follow the instructions on VFAQ (talking about turning the motor by hand)?



Chance
91 galant 1902/2000 sold
91 vr4 "unknown"
97 tsi awd race car
90 tsi awd dd sold
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