3000 ford diesel fuel overflowing into crank case

Sewer rat

New User
Hi I m wondering if a 3000 ford diesel has a pick up pump or is it gravity from the tank ? I had my pump rebuilt and now fuel is filling my crank case .
Thanks for any help
 
The 3000 diesels were made with different injection pumps at different times. Some of them have the Simms in-line pump and some have the CAV rotary pump. Neither of them used an external lift pump, but either of them may have had in internal lift pump, but I'm not an expert on them.
 
I m pretty sure this is the in-line it is a 74 3000 just trying to figure out if there could be a bad rubber diaphragm or if I dared to take the 4 screws out of the end of pump
 
A '74 should have a CAV rotary pump. The date ranges were:

01/01/65-12/31/65 - CAV
01/01/66-08/31/69 - Simms
09/01/69-12/31/69 - CAV
01/01/70-12/31/70 - Simms
01/01/71-1975 - CAV

Fuel filling the crankcase sounds like an injector stuck open that is leaking fuel into a cylinder and past the rings. There is no direct way for fuel to get from inside the pump to inside the crankcase without going through an injector. The pump is driven by a gear up on the front of the engine behind the timing gear cover and if fuel were to leak out the front of the pump then it would end up inside that cover, but not inside the crankcase.
 
(quoted from post at 10:32:46 01/01/23) A '74 should have a CAV rotary pump. The date ranges were:

01/01/65-12/31/65 - CAV
01/01/66-08/31/69 - Simms
09/01/69-12/31/69 - CAV
01/01/70-12/31/70 - Simms
01/01/71-1975 - CAV

Fuel filling the crankcase sounds like an injector stuck open that is leaking fuel into a cylinder and past the rings. There is no direct way for fuel to get from inside the pump to inside the crankcase without going through an injector. The pump is driven by a gear up on the front of the engine behind the timing gear cover and if fuel were to leak out the front of the pump then it would end up inside that cover, but not inside the crankcase.
could the compression or lack of compression cause that much fuel to go in there thank you for your help
 
"The pump is driven by a gear up on the front of the engine behind the timing gear cover and if fuel were to leak out the front of the pump then it would end up inside that cover, but not inside the crankcase."
I think if the fuel leaks out the shaft of the injection pump it will go right into the crankcase.
 
Sean, the timing gear cover does not drain back into the crankcase?? I have always guessed that it did???
 
(quoted from post at 13:19:18 01/02/23) Sean, the timing gear cover does not drain back into the crankcase?? I have always guessed that it did???
think you are a good guesser. :)
 
(quoted from post at 18:08:41 01/02/23) I always assumed that it did not. Where exactly is the front main seal in relation to the timing cover?
hat is where it is....in the timing cover, behind crank pulley
 
(quoted from post at 18:11:52 01/02/23)
(quoted from post at 18:08:41 01/02/23) I always assumed that it did not. Where exactly is the front main seal in relation to the timing cover?
hat is where it is....in the timing cover, behind crank pulley

So doesn't it seal between the crankcase and the area behind the timing cover? Or does it only seal where the crankshaft goes through the timing cover to get to the pulley?
 
only seal where the crankshaft goes through the timing cover to get to the pulley
refer to the NH site where you were just linking the guy to with the shift rail plug,
 

The timing gear cover is a open housing that bolts to the front of the oil pan at the bottom
That where you add oil to the engines on the 75/later models

mvphoto101015.jpg
 

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