Interesting Find - Aux. Port Valve Act.
01-01-10, 10:24 PM
#1
Full Member
Thread Starter
iTrader: (1)
Join Date: Jul 2004
Location: Charlotte, NC
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
Interesting Find - Aux. Port Valve Act.
There was an annoying rattling sound coming from the area around my intake manifold. I finally found it. The aux. port valve actuator has a plate that limits the travel in both directions. The screws that hold down the plate were missing from one of the actuators and the plate was rattling around. I am wondering two things:
1) How could the screws have come loose?
2) How could this effect performance?
Any ideas?
1) How could the screws have come loose?
2) How could this effect performance?
Any ideas?
01-02-10, 10:48 AM
#2
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
Sometimes things just loosen up after 20+ years. It's probably an M4 screw. Just replace it. The biggest problem is that it might be jamming up the actuator and/or creating a vacuum leak.
01-02-10, 01:57 PM
#3
Full Member
Thread Starter
iTrader: (1)
Join Date: Jul 2004
Location: Charlotte, NC
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
Actually two screws (an M4 and an M3). My first thought was that the screws vibrated loose over time and maybe they did. But, I think someone performed a repair at some point and failed to put them back.
I am most curious about how it could impact performance. I speculate that it might cause sluggish performance since the port valve wouldn't be functioning correctly (i.e. a vacuum leak). I will find out today as I am putting things back together and firing it up.
I am most curious about how it could impact performance. I speculate that it might cause sluggish performance since the port valve wouldn't be functioning correctly (i.e. a vacuum leak). I will find out today as I am putting things back together and firing it up.
Thread
Thread Starter
Forum
Replies
Last Post
