"Wshuuu" when turbo kicks in
#1
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"Wshuuu" when turbo kicks in
When the turbo kicks in, I hear some "wshuuu" sound.
When I release the gas when turbo is running, I hear "pussh". I know the "pussh" is the BOV sound. But how about the "wshuuu"??? Is this normal??
The previous owner has done silicon hoses job. And I have just installed a boost gauga getting 16~17mm Hg of vaccum. I didn't do boost test yet. I will do it asap.
When I release the gas when turbo is running, I hear "pussh". I know the "pussh" is the BOV sound. But how about the "wshuuu"??? Is this normal??
The previous owner has done silicon hoses job. And I have just installed a boost gauga getting 16~17mm Hg of vaccum. I didn't do boost test yet. I will do it asap.
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#11
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You can either check it visually,or pressurize the sys.with an air hose or just with engine running and quickly and briefly reving up (don't over rev it) until the turbo kiks in, you should hear it then.
#13
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you will not build enough presure for it to leak in nutrual. needs to be under load. do a visual inspection by ripping the entire intake down and doing a very close inspection by bending pipes and looking for cracks.
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You should see like 3-4 psi even in neutral,and if the sound is heard when it stars to build a pressure on primary as you state,than you should hear it.
Of cause it's better under load......
But if the leak is on charge pipes(3")than it should be enough....
Of cause it's better under load......
But if the leak is on charge pipes(3")than it should be enough....
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i had this same problem before, and i could never find out what the problem was. i changed all the vacuum hoses twice, and i checked all the charge pipes repeatedly. i think the best thing to do right now is to test all of your solenoids and actuators, which is something i never had the patience to do. that would probably be your best bet.
start with your turbo control and charge relief/control (sorry i forgot the name) actuators and solenoids. the procedure is outlined in the factory service manual.
or you can just go full non-sequential, which is what i have planned
start with your turbo control and charge relief/control (sorry i forgot the name) actuators and solenoids. the procedure is outlined in the factory service manual.
or you can just go full non-sequential, which is what i have planned
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did you check the solenoids and actuators that i recommended above?
get yourself a factory service manual and do that, i would put money down that it is one of the electronic turbo control solenoids.
get yourself a factory service manual and do that, i would put money down that it is one of the electronic turbo control solenoids.
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WSSHHHHHH SOUND
I know where the problem is cause i had the same.you need to replace the intercooler piping .it is problably the upper one where it connects to the y pipe .sometimes you cant tell till u take it off ,but it is usually cracked around the hose clamps.just be ready cause you get a full boost !which is great and the sounds are gone !!
#21
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okok
here's a quote from my car's inspection by mazda dealer~~
"Air duct from intercooler to turbo lifts off @ turbo and suck air when turbo engaged"
I think this is my leak problem, can someone interpret it to me?
here's a quote from my car's inspection by mazda dealer~~
"Air duct from intercooler to turbo lifts off @ turbo and suck air when turbo engaged"
I think this is my leak problem, can someone interpret it to me?
#22
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As I understand it, it's that plastic/rubber black hose that connects from intercooler to the Y-pipe - it's common failure point of the turbo system. That's why I ordered Efini Y-pipe to avoid the problem completely
#24
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OK, the wshuuu sound comes from your BOV, and usualy the time you hear it is when you are crusing in highway or local when slowly accelerating, before the wshuuu sound starts is when you are gently stepping on the gas pedal while at that moment BOV is closing not to alow any air to be bypassed but to go strait to intake so at that moment when the BOV is closing it acts like a big whistle for a secong untill fully closed.
And that's the result of the wshuuu sound you are hearing.
If your boost is not OK and the wshooo soung lasts while boostign the whole time, then you may have one of the problems above... Otherwise don't worry.
And that's the result of the wshuuu sound you are hearing.
If your boost is not OK and the wshooo soung lasts while boostign the whole time, then you may have one of the problems above... Otherwise don't worry.
Last edited by TwinTurbo93; 02-18-03 at 12:33 PM.
#25
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One more thing, if you are reving the engine in one place you will not hear that wshuuu sound unless like I said in the other post the sound lasts while boosting the whole time.
Last edited by TwinTurbo93; 02-18-03 at 12:33 PM.