correcting injection pump leak...??
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correcting injection pump leak...??
I have an 86 6.9 -------When you look directly down on the inj pump, on the inside part right above the fuel lines there is a small "screw" with holes in the head of it. It has a paint marking on it which to me means leave it alone....but i have fuel pulsating out from it and not sure what to do about it.
Any help is appreciated.
Any help is appreciated.
Laughing Gas
Joined: Jun 2007
Posts: 1,106
Likes: 35
From: Virginia
I believe that screw is a guide stud that carries the min-max governor. There is a seal against the housing and you will have to disassemble the upper portion of the IP, rotate the throttle, and remove some inner components to replace this. If your IP is aged this is the beginning of deterioration to your seals so you might be better off to just go ahead and replace all the seals or either replace the pump. My seal kit was about $23.
I have posted a document that shows the breakdown of the IP on the 6.2 and 6.5 and I used it to refurbish my IP; it should aid you if you attempt this yourself. If you attempt this, make sure this rod and any other component is put back into the SAME position you removed it from. This will include counting the turns it takes to remove any screw, bolt, guide bolt, not including IP cover seal screws, from the original position just like a carburetor air mixture screw.
I have posted a document that shows the breakdown of the IP on the 6.2 and 6.5 and I used it to refurbish my IP; it should aid you if you attempt this yourself. If you attempt this, make sure this rod and any other component is put back into the SAME position you removed it from. This will include counting the turns it takes to remove any screw, bolt, guide bolt, not including IP cover seal screws, from the original position just like a carburetor air mixture screw.
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ok cool. Thats about s good news as i can get i suppose. I was afraid i was going to have to take it off. I bought the inj pump ..?? a year or so back and wasnt expecting any trouble.
What is the purpose of the little holes in the head of the screw. I need to take a second look at it but i think the fuel is coming from one of the holes or coming from the screw itself. It doesnt really look like its coming from a seal by the housing although i know that would probably make the most sense.--again i need to take another look at it to be sure.
What is the purpose of the little holes in the head of the screw. I need to take a second look at it but i think the fuel is coming from one of the holes or coming from the screw itself. It doesnt really look like its coming from a seal by the housing although i know that would probably make the most sense.--again i need to take another look at it to be sure.
Laughing Gas
Joined: Jun 2007
Posts: 1,106
Likes: 35
From: Virginia
I reckin those holes in the head are for a factory or shop tamper seal.
Is this a new pump or some pump from a recycling yard?
I have only disassembled one of these pumps and that was several years ago. If there is a locknut on the guide you might try tightening up on that lock nut. Hold the head of the guide shaft with the appropriate tool and turn the nut clockwise.
. If the guide rod doesn't have a locknut and is flush against the IP I do not see how it might effect the inner components and I do not see why it couldn't be snugged a bit.
Is this a new pump or some pump from a recycling yard?
I have only disassembled one of these pumps and that was several years ago. If there is a locknut on the guide you might try tightening up on that lock nut. Hold the head of the guide shaft with the appropriate tool and turn the nut clockwise.
. If the guide rod doesn't have a locknut and is flush against the IP I do not see how it might effect the inner components and I do not see why it couldn't be snugged a bit.
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