 Cylinder Leak Down Test, How to Do |
|
|
|
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. |
|
|
| iiibdsiil |
 Jan 13 2004, 12:14 PM
Post
#1
|
|
Needs Door Locks  Group: Members Posts: 605 Joined: 19-November 03 From: Tampa / Boca Raton, FL Member No.: 1,362  |
How can you do a cylinder leak down test? What, if any, special tools are needed.
- Brett Smith |
   |
 
|
  |
Replies
| smrz914 |
Jan 13 2004, 09:17 PM
Post
#2
|
|
Soon to be brightening the life of the person behind you. Group: Members Posts: 456 Joined: 21-April 03 From: Pleasant Hill, CA or Chico, CA Member No.: 596 |
Not sure what you know of them but you remove the spark plug and screw in a hose into the hole. Then you take compressed air and connect it to the guages. The piston should be at TDC and you should have the wheels blocked so the car doesn't run you over. (almost seen this happen). If you do get excessive leakage you can diagnose where the leak is. In no particular order. With the cylinder presurized listen inside the intake for escaping air. If you hear some, your intake valve is not sealing. Then listen for air at the exhaust pipe, and if you hear air your exhaust valve is not sealing. Then take the oil cap off and listen for air their, if you hear some it's your rings. There will always be some air leaking, nothing is perfect. I belive 4-8% is still in the good range but this will clearly be marked on the tester. Good luck
|
|
|
|
Posts in this topic
iiibdsiil Cylinder Leak Down Test Jan 13 2004, 12:14 PM
Dave Blackburn Hey Brett,
You need a special leakdown tester. It ... Jan 13 2004, 12:30 PM redshift You do this while your engine is at operating temp... Jan 13 2004, 09:36 PM iiibdsiil Thank you very much guys.
Ran a compression check... Jan 14 2004, 12:25 AM redshift Glad it wasn't evident in your cylinders..
:... Jan 14 2004, 01:47 AM ArtechnikA |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 6th June 2024 - 07:05 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.
| All rights reserved 914World.com © since 2002 |
|
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |