Strange actuator/wastegate problem..
#1
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I was driving along and all of a sudden I had no boost, literally only made around 3 psi at 6000rpm! ![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
lol
![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
#5
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I was driving along and all of a sudden I had no boost, literally only made around 3 psi at 6000rpm! ![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
lol
![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
#6
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I was driving along and all of a sudden I had no boost, literally only made around 3 psi at 6000rpm! ![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
lol
![](https://passionford.com/forum/images/smilies/shocked.gif)
So checked all hoses etc. as you do and all was well, then popped the actuator rod off the waste gate arm to check the gate was not stuck open or something silly (sounded like turbo wasnt spooling) and I found that the preload had gone from half a hole to no hole at all and was actually holding the gate open a fraction!!!
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
So I wound the rod in and set half a hole again as normal but in the back of my mind was thinking maybe the penny wheel had come off because how could I go from having half a hole of preload to none (threads are fine on the actuator rod etc.)?!
Went up the road not expecting any boost and much to my suprise it's all back to normal!
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What could of happened? It makes no sense to me!
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Oh! Is this a common problem and how does it happen, too high EGT's?
Should I replace the elbow or can I replace just the wastegate shaft?
Last edited by Karlos G; 02-08-2011 at 11:55 AM.
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#8
![Default](https://passionford.com/forum/images/icons/icon1.gif)
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
What i am getting at is the operating angle will now have changed as the rest position has been altered.
#9
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Yup got ya, the angle is acceptable from actuator rod to wastegate arm although it is noticably different, I guess so long as it still functions as it should and can hold stable boost that is all that matters really? Any more probs and I'll just replace it.
Thanks Stu!
Thanks Stu!
#11
Advanced PassionFord User
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I guess this is a common issue. I had a similar thing with the actuator bracket, i had to bend mine a touch to get the actuator rod to line up nicely with the wastegate pin as it was out of line when opening and i thought it could cause it to stick... This couldve led to excess pressure on the wrong part of the wastegate arm etc?
#14
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![Default](https://passionford.com/forum/images/icons/icon1.gif)
i had this problem, so i slackened off the nuts on the snail and rotated it very slightly so actuator lined up perfect then
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