Collapsed lifter? |
|
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. |
|
Collapsed lifter? |
JMT |
Jun 8 2022, 08:27 PM
Post
#1
|
Newbie Group: Members Posts: 36 Joined: 19-August 16 From: Ca Member No.: 20,316 Region Association: None |
Hello everyone. Went for a drive today and car ran great, stopped for fuel and when I started back up I heard a horrible rattle coming from cylinders 3 and 4 valve cover. After a tow home I found this. At least 1/4" gap from rocker to valve tip. I turned the engine over slowly and did get the rocker arm to slightly open valve. I thought how could a solid lifter collapse?
I also pulled the rockers and pushrod. The pushrod was not bent. I looked down the pushrod tube and saw 'C' clips on the lifters. Is there such a thing as solid lifters with 'C' clips? Thank's for the help. |
Dave_Darling |
Jun 9 2022, 03:34 PM
Post
#2
|
914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Do you have a dead sound when cranking the starter? The starter will make some noise when turning over a cylinder that has compression, and no noise (or rather, less noise) when turning over a dead hole.
Check the height of the valve tips when the valves are closed. If the one is lower than the others, something is holding it open. That something is usually the valve seat. --DD |
Lo-Fi Version | Time is now: 16th June 2024 - 01:29 PM |
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 ... |