This is topic Hissing injector in forum Tech Talk at Northern California Ford Owners  .


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Posted by gercolla1 (Member # 3068) on :
 
At idle I noticed that one of my injectors makes an intermittent hissing noise. I can't remember if that was normal. I am just trying to start to drive this thing again.
 

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Posted by BlackNGold (Member # 655) on :
 
That doesn't sound normal...Is your car idling ok, is there any other drivability problems?....

Do a search on the web for "injector balance test" and that should help you....And obviously make sure it's not leaking....

Good luck!...
 

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Posted by Eddie510 (Member # 2354) on :
 
mine did the same noise, my problem was that it was leaking. id smell a little bit of gas too. check around your lower manifold for any leaks or gas smell
 

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Posted by cees87drop (Member # 4066) on :
 

quote:

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Originally posted by Eddie510:
mine did the same noise, my problem was that it was leaking. id smell a little bit of gas too. check around your lower manifold for any leaks or gas smell

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same here
 

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Posted by CDT (Member # 5004) on :
 
sounds like a bad O-ring on the injector.
 

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Posted by Eddie510 (Member # 2354) on :
 
ohh yeahh, i did replace all the o-rings and put them back in and diddnt hiss again
 

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Posted by 92stangLX (Member # 3252) on :
 

quote:

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Originally posted by Eddie510:
ohh yeahh, i did replace all the o-rings and put them back in and diddnt hiss again

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That's what I would do. Also, coat the o-rings with a light coat of oil to help them seat. You can get the o-ring kits @ Pep boys. They come with the upper and lower o-ring as well as a new cap.
 

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Posted by gercolla1 (Member # 3068) on :
 
Well, it is not leaking yet. It idles fine and passed smog this morning. I am just gonna run it til' it gives me another sign. Fortunately, they are just the stock 19lb'ers and it is the #1 cyl. injector in plain view.
 

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