CoolAirVw has been busy
- Thread starter drucifer
- Start date
maxmoo
Veteran Member
- Joined
- Jan 19, 2011
- Location
- Lakefield, Ontario, Canada
- TDI
- 2000 golf, 2001 golf, 2000 beetle, 2003 wagon, 2004 golf, 2004 jetta, all diesels
Well done! 
CoolAirVw
Vendor
Thanks..Well done!
Updated video here--> https://www.youtube.com/watch?v=Nl66nCaOlI0&t=41s
More Vw diagnosis video's to come.
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Who the hell drilled that hole in the vacuum reservoir (which in this engine is incorporated into the valve cover)??
There's no chance it has been plugged with something out from factory; neither it does look like accidental crack
There's no chance it has been plugged with something out from factory; neither it does look like accidental crack
Ol'Rattler
Top Post Dawg
Why does it matter? If the hole isn't factory, maybe it was drilled to demonstrate the diagnostic results you would get if the CCV diaphragm or reservoir leaked.
The important thing the video conveyed was the correct diagnostic procedure for the problem as presented.
The important thing the video conveyed was the correct diagnostic procedure for the problem as presented.
Rrusse11
Veteran Member
The cover is the vacuum reservoir? Sheesh, I would've been tempted to try plugging the hole first. A small truss head bolt with a nut and washer and a dab of sealant.
My $.02,
R*2 <----- known to be frugal, {;o)
My $.02,
R*2 <----- known to be frugal, {;o)
Ol'Rattler
Top Post Dawg
I guess I'll use smaller words next time................
Top notch video Richard. Even though I have a good idea on how the boost is controlled, your video really ties the the problem, component locations and diagnostic methodology all together.
Translation: When your turbo ain't boosting right, your movie really helps a feller get Er done.
Top notch video Richard. Even though I have a good idea on how the boost is controlled, your video really ties the the problem, component locations and diagnostic methodology all together.
Translation: When your turbo ain't boosting right, your movie really helps a feller get Er done.
CoolAirVw
Vendor
When I made the video I assumed there was a CCV diapharm similar to gasser valve covers, and the hole was a vent hole which would be necessary for a CCV diaphram. I did notice the new valve cover and another valve cover on a customers car didn't have the hole but I assumed it had been updated.
Based on what Henrick said, I dug the valve cover out of the trash and noticed someone had removed the top cover of the "vacuum canister" section of the valve cover, and glued it back on. I pried off the top and I could tell from the inside that the hole had been drilled!
Pics to follow!
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CoolAirVw
Vendor
thanks.
CoolAirVw
Vendor
So here is the glue that I never noticed till I pulled it out of the trash after Henrick pointed out that that section of the valve cover was the vacuum reservoir.
I pried up the top of the reservoir.
Here's some glue where someone had glued it on.
And of course from the other side it was obvious the hole had been drilled.
I have no idea why someone would do this.
I pried up the top of the reservoir.
Here's some glue where someone had glued it on.
And of course from the other side it was obvious the hole had been drilled.
I have no idea why someone would do this.
That reservoir isn't connected with crankcase in any way, right?
If you pull vaccum there, it should hold steady and if you build pressure in that reservoir, it should NOT escape via CCV, right?
I recall seeing a car which has turbo actuator not holding vacuum issue (for sure). However, I recall blowing air into that reservoir and it was escaping through CCV.... I bet that car had 2 separate problems..
If you pull vaccum there, it should hold steady and if you build pressure in that reservoir, it should NOT escape via CCV, right?
I recall seeing a car which has turbo actuator not holding vacuum issue (for sure). However, I recall blowing air into that reservoir and it was escaping through CCV.... I bet that car had 2 separate problems..
maxmoo
Veteran Member
- Joined
- Jan 19, 2011
- Location
- Lakefield, Ontario, Canada
- TDI
- 2000 golf, 2001 golf, 2000 beetle, 2003 wagon, 2004 golf, 2004 jetta, all diesels
Maybe somebody on here will fess up
CoolAirVw
Vendor
I couldn't see any port to let vacuum out of the reservoir into any CCV area. I poured water into the reservoir and it stayed at a consistant level.
CoolAirVw
Vendor
In hindsight that was probably a good option. Or a separate vacuum reservoir, like maybe one from a ALH.
Ol'Rattler
Top Post Dawg
Could you expand some on how the CCV system functions? It might help explain what the person was trying to accomplish by drilling the hole.
CoolAirVw
Vendor
Might not be the best to answer this as I'm a transmission mechanic. That's my usual excuse when I don't know what I'm talking about. All I know is there is a swirl chamber to prevent as much oil as possible going into the intake track. There is also a Crankcase vent "heater" to heat or burn any oil mist that does come out.
I dont know why they would drill the hole in there. Nor do I know why they would bust the top off and glue it back on.
I dont know why they would drill the hole in there. Nor do I know why they would bust the top off and glue it back on.
Rrusse11
Veteran Member
Richard,
Thanks for the hindsight. In view of your autopsy, clearly the cover needed replacement for a long lasting fix. Still, being no mechanic,
I would've been tempted to take a piece of chopstick, cylindrical and gently tapered, and a dab of hot glue or the like, and plugged the hole as a quick and dirty repair. Your finger test certainly seemed to provide a remedy.
Cheers,
Richard
Thanks for the hindsight. In view of your autopsy, clearly the cover needed replacement for a long lasting fix. Still, being no mechanic,
I would've been tempted to take a piece of chopstick, cylindrical and gently tapered, and a dab of hot glue or the like, and plugged the hole as a quick and dirty repair. Your finger test certainly seemed to provide a remedy.
Cheers,
Richard
CoolAirVw
Vendor
I'm removing the video to make edits to it to reflect the actual failure. I'll be sure to credit Henrick for informing me that the hose in the valve cover was for a integral vacuum reservoir, and not for a CCV.
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CoolAirVw
Vendor
I have edited the video to reflect the fact that the hole was drilled, and that it was the problem and included video of the valve cover after I found the cover was glued on.
Here is the link to the new video.
https://www.youtube.com/watch?v=Nl66nCaOlI0&t=41s
Thanks to Henrick! (mentioned in video!)
Here is the link to the new video.
https://www.youtube.com/watch?v=Nl66nCaOlI0&t=41s
Thanks to Henrick! (mentioned in video!)
Very nice video on proper troubleshooting for underboost condition.
Thanks for the credits, didn't expect that I made some kind of discovery After the #5 post in this thread I assumed that it indeed was driled for demonstation purposes to make a vacuum leak scenario
Thanks for the credits, didn't expect that I made some kind of discovery
After the #5 post in this thread I assumed that it indeed was driled for demonstation purposes to make a vacuum leak scenario
CoolAirVw
Vendor
it was definitely NOT drilled for demonstration. I thought it was a vent for a CCV diaphragm like gassers. I knew that tdi's had "swirl chambers " in the ccv system as I have read the SST, but of course didn't remember it at the moment I most needed to and had to eat some crow. That's life though. And that's the beauty of this forum, the sharing of knowledge.