 damn vacuum leak |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| dax1969 |
 Apr 6 2021, 05:19 AM
Post
#1
|
|
Member  Group: Members Posts: 362 Joined: 10-March 14 From: belgium Member No.: 17,103 Region Association: None 
 |
I was so close on solving the last vacuum leak and created another one (IMG:style_emoticons/default/sad.gif)
All hoses, injector seals etc replaced and while doing the "spray test" with brake cleaner I noticed that the connecting rubber on cylinder nr 3 was bad. Replaced the four connecting hoses and installed new intake manifold gaskets. Did the spraytest again and it all looks good on the connecting rubbers but now I have a leak on the intake manifold on the passenger side. pffft. Intake gaskets are new and installed them dry...ordered another new one but should I put some sealant on ? Somebody suggested to add a paper gasket as well but I see no reason why, the new intake gasket should do the job I guess. Idle is at 1200 rpm and can't get it lower due to that bloody leak any suggestions ? thks in advance Dax |
   |
 
|
  |
Replies
| DRPHIL914 |
Apr 6 2021, 05:57 AM
Post
#2
|
|
Dr. Phil Group: Members Posts: 5,768 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States
|
QUOTE(dax1969 @ Apr 6 2021, 07:19 AM)  I was so close on solving the last vacuum leak and created another one (IMG:style_emoticons/default/sad.gif) All hoses, injector seals etc replaced and while doing the "spray test" with brake cleaner I noticed that the connecting rubber on cylinder nr 3 was bad. Replaced the four connecting hoses and installed new intake manifold gaskets. Did the spraytest again and it all looks good on the connecting rubbers but now I have a leak on the intake manifold on the passenger side. pffft. Intake gaskets are new and installed them dry...ordered another new one but should I put some sealant on ? Somebody suggested to add a paper gasket as well but I see no reason why, the new intake gasket should do the job I guess. Idle is at 1200 rpm and can't get it lower due to that bloody leak any suggestions ? thks in advance Dax i guess just make sure both surfaces are clean but i have never used any sealant on those things, and i have not had a leak there either, but maybe you have a bad one or a warped intake flange? 1200 not too bad, but you should be able to get it to 900-1000 with correct timing, might need a bit of tune at the MPS if thats been rebuilt, you could be lean and that could also cause the hunting idle. Phil |
|
|
|
Posts in this topic
dax1969 damn vacuum leak Apr 6 2021, 05:19 AM
Mark Henry I grease my intake gaskets, I just rub in enough t... Apr 6 2021, 05:53 AM
dax1969
I was so close on solving the last vacuum leak a... Apr 6 2021, 06:36 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 6th June 2024 - 08:17 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.