Hi all
I am new to this forum. It seems like a great resource as the Airtrek Turbo is quite rare at least in NZ.
I have had my standard Airtrek Turbo for a while and it had a boost leak when I bought it. I figured it was an easy fix and got it cheap.
First I put some better clamps on the flexible piping on each side of the intercooler and the outlet cold side from the turbo. This did not solve the problem. At one point it felt like it did and then the car misfired instead, so I replaced the plugs with new platinum Bosch type and it went back to this boost leak syndrome. The old plugs were in bad shape anyway.
I have replaced the factory BOV with a Turbosmart plumb back. This did not solve the problem.
Only leak I found while testing with a pressure tester where I pressurised from the turbo side of the intercooler was one of the throttle body slide seals so I replaced the seal on the spring side.
I did not change the throttle slide seal on the throttle position sensor side of the throttle body as it seemed good and tight with no rips. The throttle cable spring side seal was ripped.
I highly doubt that the throttle body slide seal leak could make this much of a hiss anyway!
I pressure tested again after replacement of the one slide seal and found no leaks, yet still have this hiss while driving.
I have no boost gauge unfortunately as car is completely stock aside from the replacement plumb back BOV. I pressure tested to 12psi or so and factory boost I believe is less than this so should have found the problem. I also shook all piping and move the throttle cable while it was at pressure and had no leaks.
See video below!
http://youtu.be/z5CA-GgbAwU
Any ideas to solve this?
Thanks
I am new to this forum. It seems like a great resource as the Airtrek Turbo is quite rare at least in NZ.
I have had my standard Airtrek Turbo for a while and it had a boost leak when I bought it. I figured it was an easy fix and got it cheap.
First I put some better clamps on the flexible piping on each side of the intercooler and the outlet cold side from the turbo. This did not solve the problem. At one point it felt like it did and then the car misfired instead, so I replaced the plugs with new platinum Bosch type and it went back to this boost leak syndrome. The old plugs were in bad shape anyway.
I have replaced the factory BOV with a Turbosmart plumb back. This did not solve the problem.
Only leak I found while testing with a pressure tester where I pressurised from the turbo side of the intercooler was one of the throttle body slide seals so I replaced the seal on the spring side.
I did not change the throttle slide seal on the throttle position sensor side of the throttle body as it seemed good and tight with no rips. The throttle cable spring side seal was ripped.
I highly doubt that the throttle body slide seal leak could make this much of a hiss anyway!
I pressure tested again after replacement of the one slide seal and found no leaks, yet still have this hiss while driving.
I have no boost gauge unfortunately as car is completely stock aside from the replacement plumb back BOV. I pressure tested to 12psi or so and factory boost I believe is less than this so should have found the problem. I also shook all piping and move the throttle cable while it was at pressure and had no leaks.
See video below!
http://youtu.be/z5CA-GgbAwU
Any ideas to solve this?
Thanks