Last edit by: IB Advertising
See related guides and technical advice from our community experts:
- Audi A4 B7 Performance Diagnostic Guide<br>Guide to diagnose trouble and recommended solutions.
Loud Hissing after changing fuel injectors
#1
Audiworld Junior Member
Thread Starter
Join Date: Apr 2011
Location: Bettendorf, IA
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
Loud Hissing after changing fuel injectors
2006, A4 3.2L Quattro,
I just recently finished changing my fuel injectors, and cleaning the valves. I put everything back together, new lower manifold gaskets, new upper manifold gaskets, new injectors already had the o-ring, split spacer and nylon ring on them. I have no loose plugs that I can find, all hoses plugged in that I can tell. New fuel filter, new spark plugs, new oil and filter, new air filter.
I cleared any codes and it started right up, BUT has a really loud hissing noise that i am sure is vacumn. It sounds like it's coming from under the upper manifold.
Does anyone have ideas of what to check. I am going to take the manifold off just in case but if I put it back on and it still hisses where can I look for typical leak points.
I just recently finished changing my fuel injectors, and cleaning the valves. I put everything back together, new lower manifold gaskets, new upper manifold gaskets, new injectors already had the o-ring, split spacer and nylon ring on them. I have no loose plugs that I can find, all hoses plugged in that I can tell. New fuel filter, new spark plugs, new oil and filter, new air filter.
I cleared any codes and it started right up, BUT has a really loud hissing noise that i am sure is vacumn. It sounds like it's coming from under the upper manifold.
Does anyone have ideas of what to check. I am going to take the manifold off just in case but if I put it back on and it still hisses where can I look for typical leak points.
Last edited by mitnworb; 05-29-2016 at 02:17 PM. Reason: Solved
#2
Audiworld Junior Member
Thread Starter
Join Date: Apr 2011
Location: Bettendorf, IA
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
2006, A4 3.2L Quattro,
I just recently finished changing my fuel injectors, and cleaning the valves. I put everything back together, new lower manifold gaskets, new upper manifold gaskets, new injectors already had the o-ring, split spacer and nylon ring on them. I have no loose plugs that I can find, all hoses plugged in that I can tell. New fuel filter, new spark plugs, new oil and filter, new air filter.
I cleared any codes and it started right up, BUT has a really loud hissing noise that i am sure is vacumn. It sounds like it's coming from under the upper manifold.
Does anyone have ideas of what to check. I am going to take the manifold off just in case but if I put it back on and it still hisses where can I look for typical leak points.
I just recently finished changing my fuel injectors, and cleaning the valves. I put everything back together, new lower manifold gaskets, new upper manifold gaskets, new injectors already had the o-ring, split spacer and nylon ring on them. I have no loose plugs that I can find, all hoses plugged in that I can tell. New fuel filter, new spark plugs, new oil and filter, new air filter.
I cleared any codes and it started right up, BUT has a really loud hissing noise that i am sure is vacumn. It sounds like it's coming from under the upper manifold.
Does anyone have ideas of what to check. I am going to take the manifold off just in case but if I put it back on and it still hisses where can I look for typical leak points.
Thread
Thread Starter
Forum
Replies
Last Post
svenjamison
Audi 4000 / Coupe GT Discussion
2
01-19-2013 06:51 PM
boxerfan
Audi 4000 / Coupe GT Discussion
2
06-02-2008 09:17 AM
LarryF_in_Ca
Audi 5000 / 200 / V8 Discussion
4
03-14-2005 06:31 AM
Audithority
Audi 90 / 80 / Coupe quattro / Cabriolet
1
07-22-2003 09:03 AM