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Mechanical fuel pump broke off block

64SF

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Fuel pump broke off from mounting flange while running. Biggest problem though is fuel pump push rod is driven down in its cavity and is jammed stuck solid. Anyone have this happen...elect pump time?
 
Is it a big block? There's a plug here for access.

Screenshot_2018-06-13-14-20-55.jpg
 
If you pull the fuel pump plug as KK said and push rod is bent so it won't come out electric pump time. Doubt it's bent but never know, don't see how it's bent on cam end.
 
I think there's more to this story then what's being said. Fuel pumps don't just break while running, unless you were doing something very stupid!
 
Way back then, I had a 383 and mine stuck so I put an electric on it, covering it with a blank off plate. Well, the electric failed at a most inopportune time and was noisy anyway so I went back to a mechanical. It turned out, somehow my pushrod had a burr on it. If I remember, I just cranked the engine with the blank plate removed and the pushrod shot out. Cleaned it up, reinstalled and good to go. Interesting enough, you can put your finger in the fuel pump opening and feel the timing chain, mine had over an inch of play if I recall. Of course it had around 130,000 hard miles on it!
 
Thanks for all the replies I’m going to pull the plug tomorrow And hopefully will be able to get the push rod I will post up some pictures where this pump broke. It’s a bit weird.
 
If memory serves me, and sometimes it doesn't, I think I had trouble getting the pushrod out so I pushed it IN first, against the cam lope and then cranked the engine which shot it out of the hole! I might have shot some oil on it first and it might have taken more than once to free it. Let us know how you make out!
 
If the push rod is jammed up, you may have a burr on the edge of the push rod, and also you probably wiped the eccentric on the cam. Time for an oil change, inspection of ejected oil, measure and check old push rod - replace if worn and consider checking the fuel pump. If the cam eccentric is wiped, you either need to go to an electric pump, or replace/rebuild the cam.

Either way, do not just keep driving without serious inspection.
 
I worked on an engine with a bent push rod and we machined a piece of round stock that would fit in the plug hole but had a hole in the center that the rod fit in. Used set screws to lock down the rod inside and worked it out.
 
I worked on an engine with a bent push rod and we machined a piece of round stock that would fit in the plug hole but had a hole in the center that the rod fit in.
That thought had crossed my mind should mine ever need replacing, but I questioned the hardness. Did you harden it or use it as machined?
 
That thought had crossed my mind should mine ever need replacing, but I questioned the hardness. Did you harden it or use it as machined?
I was a few years ago and I don't remember doing anything special. I locked it down and then used a screwdriver inside the cavity to pry down and out on the tool I had made. It took us a while for everything but it was better than yanking the motor back out and tearing it apart. I did it as a stab in the dark and it worked. Even more creative would be to have threads on the outside of the tool and pull it out with a jam nut just like any other puller. If enough of the push rod is out maybe put more than one set screw in it to be sure they don't slip.
 
I was actually referring to the hardness and durability of the push rod turned from round stock.
 
I was actually referring to the hardness and durability of the push rod turned from round stock.
Sometimes, you can just never get a honest answer!
 
We did not make a fuel pump push rod. We made a tool to remove a bent rod. My mistake if I was not specific. And the thread was about a stuck pump pushrod.
 
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OK, that clarifies it. I thought you said you machined a new push rod, which peaked my interest.
 
Here's the pump...casting weakness? As I posted earlier the mounting flange was still bolted tight on the block.

AAAA - 1 (3).jpg
 
Sorry but I have to ask....... Is this on the same engine that had the pump rod fall into the oil pan ? Did you get the 1st rod out of the pan ?
 
Holy Crap! That looks like it got wacked as in banged against something during the engine install. Or maybe during a header install. I have never seen or heard of anything like that before. The possibility exists that someone on the pump assembly line dropped it just right and it suffered a minute crack which eventually failed after many heat and cool cycles aided by vibration. Either that, or a jealous competitor snuck in your garage and used a hammer on it because you beat his car racing! LOL:D
 
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