what does this look like? valve guide or stem seal
#1
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Hi there
Could use some help to determine if this could be seal or guide....
I guess seals and guides will smoke in same way...?
It did smoke at times so I knew something was wrong, so removed exhaust manifold to have a look, and looking at cylinder 3 made it quite obvious that something was not right there.
There was also a small trail of oil in the manifold port 3, but just a little bit.
Is it just a matter of trying to put a new seal on that valve and if that doesn't help it must be guide? - or is the picture indicating which of those it most likely can be?
Cylinder 3
![](http://i4.photobucket.com/albums/y149/Heitmann/foto1.jpg)
The others:
![](http://i4.photobucket.com/albums/y149/Heitmann/foto2.jpg)
thanks for looking
Could use some help to determine if this could be seal or guide....
I guess seals and guides will smoke in same way...?
It did smoke at times so I knew something was wrong, so removed exhaust manifold to have a look, and looking at cylinder 3 made it quite obvious that something was not right there.
There was also a small trail of oil in the manifold port 3, but just a little bit.
Is it just a matter of trying to put a new seal on that valve and if that doesn't help it must be guide? - or is the picture indicating which of those it most likely can be?
Cylinder 3
![](http://i4.photobucket.com/albums/y149/Heitmann/foto1.jpg)
The others:
![](http://i4.photobucket.com/albums/y149/Heitmann/foto2.jpg)
thanks for looking
#2
I've found that life I needed.. It's HERE!!
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i think its a guide thats gone as i think if it was a valve stem seal would it not smoke as you let off the revs ? rather than smoke all the time
#5
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Guys thanks for your input
One thought though - I see two valves in the picture, only one covered in oil. To me that means it can only be guide or seal.
And it didn't smoke all the time - symptoms was pointing at seals/guides
I believe the smoke would be pretty much the same if guide or seal ???
But i wondered if the amount of could tell if it was likely to be the one or the other
Thanks again
One thought though - I see two valves in the picture, only one covered in oil. To me that means it can only be guide or seal.
And it didn't smoke all the time - symptoms was pointing at seals/guides
I believe the smoke would be pretty much the same if guide or seal ???
But i wondered if the amount of could tell if it was likely to be the one or the other
Thanks again
Last edited by Heitmann; 22-02-2013 at 06:57 AM.
#7
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Sounds plausible the way you put it for sure - hadn't looked at it this way before....im no mechanic (obvious I know
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
But if the seal is stopping oil from getting to the guide normally, then why do I see these questions about if worn guides is causing oil smoke ?
Not questioning your input in anyway - just wondering this
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#9
An eye for detail...
iTrader: (1)
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Thanks Aston
Sounds plausible the way you put it for sure - hadn't looked at it this way before....im no mechanic (obvious I know
)
But if the seal is stopping oil from getting to the guide normally, then why do I see these questions about if worn guides is causing oil smoke ?
Not questioning your input in anyway - just wondering this
Sounds plausible the way you put it for sure - hadn't looked at it this way before....im no mechanic (obvious I know
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
But if the seal is stopping oil from getting to the guide normally, then why do I see these questions about if worn guides is causing oil smoke ?
Not questioning your input in anyway - just wondering this
But the stem seal is there to stop oil running down the valve and limit gas blowing back up. Without seals the oil will simply run down the valve guide since it does so little to stop it happening.
Best if someone with more cosworth experience comments for sure cause I'm speculating.
#12
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I'd say its looks like the valve guide seal on the right hand side valve, it's defo more moist at the bottom of the guide compared to the other, plus being the same cylinder your always going to get it on both valves obviously, if it was worn guides I'd hazard a guess that the other cylinders would be showing sign of wear and by the pictures they seem dry enough. There is a thread on here somewhere of a tool a guy made to change valve guide seals in situe so I'd copy that and change all of them and try that, it may take a while but beats paying for new headgasket, head bolts, fresh oil etc etc
Last edited by coswurv; 22-02-2013 at 08:51 PM.
#14
An eye for detail...
iTrader: (1)
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Thanks Aston
Sounds plausible the way you put it for sure - hadn't looked at it this way before....im no mechanic (obvious I know
)
But if the seal is stopping oil from getting to the guide normally, then why do I see these questions about if worn guides is causing oil smoke ?
Not questioning your input in anyway - just wondering this
Sounds plausible the way you put it for sure - hadn't looked at it this way before....im no mechanic (obvious I know
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
But if the seal is stopping oil from getting to the guide normally, then why do I see these questions about if worn guides is causing oil smoke ?
Not questioning your input in anyway - just wondering this
But the stem seal is there to stop oil running down the valve and limit gas blowing back up. Without seals the oil will simply run down the valve guide since it does so little to stop it happening.
Best if someone with more cosworth experience comments for sure cause I'm speculating.
#15
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I'd say its looks like the valve guide seal on the right hand side valve, it's defo more moist at the bottom of the guide compared to the other, plus being the same cylinder your always going to get it on both valves obviously, if it was worn guides I'd hazard a guess that the other cylinders would be showing sign of wear and by the pictures they seem dry enough. There is a thread on here somewhere of a tool a guy made to change valve guide seals in situe so I'd copy that and change all of them and try that, it may take a while but beats paying for new headgasket, head bolts, fresh oil etc etc
Thanks - agree on the guides that the others you would think they also would show sign of wear
actually I left out one information - I did change the seals about 4000 miles ago and it has become worse for the last 1-2000 miles. So I could have messed up that one seal when changing. So I have the tools to change it with head in place, so that is what I will try as a start.
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