This cant be normal
Thread Starter
Junior Member
Joined: May 2010
Posts: 52
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From: Wisconsin and Colorado
Year: 1987
Model: Cherokee
Engine: 4.0 IL6
Not sure if u can see in the picture but 4-6 injector connectors had a wet oily residue in them. What would be causing this?
Thank a bunch
Aaron
Thank a bunch
Aaron
Senior Member
Joined: Apr 2011
Posts: 563
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From: Lima Ohio
Year: 1996
Model: Cherokee
Engine: 4.0 HO
could be bad injectors. or could be a bigger problem like leaky valves and the compression is forcing the fuel and air mixture up in to the injector... and intake. i would also take the TBI off and look in you intake manifold.
CF Veteran
Joined: Jun 2011
Posts: 2,858
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From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by lolz_jeep
could be bad injectors. or could be a bigger problem like leaky valves and the compression is forcing the fuel and air mixture up in to the injector... and intake. i would also take the TBI off and look in you intake manifold.
Last edited by Slick761; Aug 5, 2011 at 02:15 AM.
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Dude what do you want...... it is physical damage... instead of sitting there asking for more opinions why don't you go out and either pull em and replace em or suck it up and put it back together and run till there's an issue. There isn't much that can happen to the connector on an injector. Its not in the combustion chamber or the exhaust. THe only thing it is exposed to is heat and whatever chemicals the owner decides might be a good idea to throw at it... you see where I'm going with this?
Senior Member
Joined: Apr 2011
Posts: 563
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From: Lima Ohio
Year: 1996
Model: Cherokee
Engine: 4.0 HO
Dude what do you want...... it is physical damage... instead of sitting there asking for more opinions why don't you go out and either pull em and replace em or suck it up and put it back together and run till there's an issue. There isn't much that can happen to the connector on an injector. Its not in the combustion chamber or the exhaust. THe only thing it is exposed to is heat and whatever chemicals the owner decides might be a good idea to throw at it... you see where I'm going with this?
Last edited by lolz_jeep; Aug 5, 2011 at 10:59 AM.
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Senior Member
Joined: Apr 2011
Posts: 563
Likes: 0
From: Lima Ohio
Year: 1996
Model: Cherokee
Engine: 4.0 HO
Dude.... no disrespect.... but no. That is not feasible. For one thing that is the electrical connector... for another if compression was coming back into the intake it would blow straight past the injector and through he throttle body...I don't know how else to put this.....
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by lolz_jeep
your being a dick for no reason guy how bout you knock it off? this is what forums are for is to ask questions and get ideas. dont get hurt falling off your high horse Buddie.
TO me this seems like fixing something till it is broken.
There is no physical way that oil can blow back up through an electrical connection. Taking off a TB to look into the intake to see what is wrong with a Fuel Injector is like looking in the exhaust to see what is wrong with a spark plug.
If it is working, and not leaking fuel (you would smell it and see it) I would put it back on and run it.
There is no physical way that oil can blow back up through an electrical connection. Taking off a TB to look into the intake to see what is wrong with a Fuel Injector is like looking in the exhaust to see what is wrong with a spark plug.
If it is working, and not leaking fuel (you would smell it and see it) I would put it back on and run it.


