Tial Wastegate stuck open
#1
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Tial Wastegate stuck open
Alright, so i just recently got my car running after going boost. Well i noticed that at idle exhaust is coming out of my dumptube. I took the dumptube off and sure enough the WG is stuck open.
I bought it used from a member on here. The valve seat is in, i just checked. It is only open about half a cm. I can't get the valve to move up or down when i press on it.
I am going to take apart the WG tomorrow. Anything i should look for? What normally causes this? Faulty WG?
Thanks.
I bought it used from a member on here. The valve seat is in, i just checked. It is only open about half a cm. I can't get the valve to move up or down when i press on it.
I am going to take apart the WG tomorrow. Anything i should look for? What normally causes this? Faulty WG?
Thanks.
#2
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Re: Tial Wastegate stuck open (90sedan)
do you have your vacum source hooked into the top or the bottom of the WG ? if its in the top. the valve might open @ idle with a very low psi rated spring in the gate.
#3
Re: Tial Wastegate stuck open (90sedan)
sounds like someone used leaded fuel with a pump valve
look for corrosion on the valve stem, or the sweet sweet smell of race gas
Modified by TiAL at 7:06 AM 6/11/2007
look for corrosion on the valve stem, or the sweet sweet smell of race gas
Modified by TiAL at 7:06 AM 6/11/2007
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Vacuum source is hooked up to the side, i'm not running a boost controller. A 7.5 psi spring is in it.
Honestly, the lower valve stem looks fine, it was just black from carbon.
Honestly, the lower valve stem looks fine, it was just black from carbon.
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