08-05-2016, 10:59 AM
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Loud Hissing after changing fuel injectors
05-29-2016, 10:26 AM
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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
05-29-2016, 02:16 PM
#2
Audiworld Junior Member
Thread Starter
Join Date: Apr 2011
Location: Bettendorf, IA
Posts: 24
Likes: 0
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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.
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