1972 AM General with a Continental engine has a developing leak from the injection pump I believe. At least that is where I can see it leaking from. I am going to try to add a photo that displays the system diagram. The leak is comming from right underneath the round component (highlighted green), where the six injector lines come into.
Does anyone have knowledge of the seals needed and where I can buy them?
Thank You
__________________ 1st. Infantry Division - 1980 Fort Riley Kansas 172nd. Infantry Brigade - 1983 Fort Wainwright Alaska
U.S. ARMY
Avatar: I am behind the camera in 1982 at Fort Irwin. I drove the M113A1 Armored Personel Carrier, which we are positioned on in this picture.
1972 AM General M35A2C
1993 M105A2
1964 M105A2
1972 AM General M35A2 #2
My truck is down right now for the very same reason. Get your face down by the Hydraulic head of the F. I system with a flashlight and have someone crank the engine over WITHOUT STARTING ! You should see the fuel leak if it is coming from under the head or from the side of the head. In my case, there was a very very small hairline crack right on the side of the hydraulic head. Hard to believe, but there it was. When running it could never be seen, but when under starter was easy to find. Best of luck, hope it is just the o-ring under the head, if not, R & R time. Good Luck !
My truck is down right now for the very same reason. Get your face down by the Hydraulic head of the F. I system with a flashlight and have someone crank the engine over WITHOUT STARTING ! You should see the fuel leak if it is coming from under the head or from the side of the head. In my case, there was a very very small hairline crack right on the side of the hydraulic head. Hard to believe, but there it was. When running it could never be seen, but when under starter was easy to find. Best of luck, hope it is just the o-ring under the head, if not, R & R time. Good Luck !
Be sure to wear eye protection, anytime you are looking at the fuel delivery system. (especially if you are looking for a leak!) Also, do not use your hands to feel for leaks while the engine is being turned over or running. diesel fuel systems operate at extremely high pressures.
Ok, reviving an old thread: I took my M35 out today and it stalled out on me several times. It behaved as if starved for fuel. I found I could (barely) keep the engine running if I pulled out the hand throttle anytime I came to a light and kept the RPM's north of 1500. Over time the issue got worse until eventually I couldn't keep the engine running unless it was under significant load (accelerating.)
When I finally looked under the hood there was a significant amount of fuel on the IP, nothing higher than the area mentioned above (the round piece the injector lines are plugged into.) Is this common? Search turned up half a dozen or so threads that are similar (although only one or two exactly the same) and is it generally just a matter of replacing some seals?
Which manual should I reference for servicing the IP? There's so many on the site I struggle to find the correct one .
Cheers.....
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New deuce owner: learning to love the right-hand lane.
Ok, for anyone else using the search function (as I was when I ran into this) here was my issue: the 'box' housing fuel shutoff valve (engine stop valve) was leaking around the edges. I removed the box to find that the gasket underneath was some sort of metal fiber gasket, and the fiberous material was completely worn away and disintegrated. So all I had were the metal fibers! Additionally the valve linkage where the fuel enters the pump assembly (HH?) was leaking from several junctions. I pulled that all apart, cleaned it up, and reassembled using teflon tape. I fired the truck up and let it idle for a good 30mins, and no leaks.
I do find though that I still have a very small amount of fuel coming from a round vent or adjustment knob on the cap where the fuel lines run to the injectors. Still working this one out.
JD: since I was working on the fuel system anyway, I went ahead and changed out the 2 main fuel filters. I have never seen anything to disgusting. It's a wonder that the engine was even running, let alone running as strongly as it was pre-leak.
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New deuce owner: learning to love the right-hand lane.
Ok, for anyone else using the search function (as I was when I ran into this) here was my issue: the 'box' housing fuel shutoff valve (engine stop valve) was leaking around the edges.
Thought that if you found fuel in what you are calling the shut down box the you have to replace the O ring that is behind the shut down lever that is in the HH.
Was it leaking fuel or oil?
Fuel Leak Injecter Pump Area - M35A2
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