|
|
|
|
| Author |
|
|
"Ferdinand's finest"
Join Date: Mar 2011
Location: Clayton, NC
Posts: 229
|
Random loss of boost
Car has been running flawlessly for a while, and pulls like a freight train at 18psi until a few days ago it won't spoil past 10psi. I hear a lot more whistling than I used to before now too that sounds like it's coming from underneath towards the rear of the car.
Any suggestions and pointers as to where I should start looking this weekend is greatly appreciated. Cheers! Drew
__________________
"The fastest lap time you will ever record, will always be done behind someone else" - Yours truly |
||
08-08-2017, 03:46 PM
|
|
|
Registered
Join Date: Jul 2004
Location: Upstate New York
Posts: 3,274
|
Build yourself a boost leak checker and test for, well, boost leaks.
__________________
Good luck, George Beuselinck |
||
|
08-09-2017, 03:35 AM
|
|
|
"Ferdinand's finest"
Join Date: Mar 2011
Location: Clayton, NC
Posts: 229
|
How could I fashion myself a boost leak tester?
__________________
"The fastest lap time you will ever record, will always be done behind someone else" - Yours truly |
||
|
08-12-2017, 06:05 PM
|
|
|
Registered
Join Date: Jul 2004
Location: Upstate New York
Posts: 3,274
|
__________________
Good luck, George Beuselinck |
||
|
08-12-2017, 06:08 PM
|
|
|
Registered
|
Would a low pressure version -using a cigar to generate smoke- such as pictured work?
|
||
|
08-13-2017, 06:11 AM
|
|
|
Registered
Join Date: Oct 2002
Location: Boulder, CO
Posts: 1,205
|
If it's a crack that opens under pressure maybe not. If it's a blown-off hose you simply did not notice then yes. However it's easier to just look for stuff like that and check for vacuum at the recirculation valve, vacuum can, etc. than hook up a rig and buy swisher sweets.
__________________
1987 928S4 1992 968 cabrio 2009 957 Cayenne GTS |
||
|
08-13-2017, 07:58 AM
|
|
|
|
Registered
Join Date: Jul 2004
Location: Upstate New York
Posts: 3,274
|
I have used both methods, and have found that a smoke machine works fine for vacuum leaks, but, for weird boost leaks, the boost leak checker seems to work better.
The boost leak tester found a split at the bottom of one of the intercooler connection hoses that a smoke tester would not have found, since the split would pretty much seal up when there was no boost to open the split.
__________________
Good luck, George Beuselinck |
||
|
08-14-2017, 09:40 AM
|
|
