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High pressure fuel pump (unit pump)

Gene Trask

Member
Joined
Jan 18, 2021
Messages
35
Points
8
Location
Honduras, IN, USA
Roxor Ownership
Roxor Owner
I just wanted to see if anyone has had success in rebuilding\cleaning the unit pressure pump?
With the ignition on, I am getting fuel to injectors at 20psi. That pressure comes from the tank pump.
My fuel rail pressure goes up to 53 when I am trying to crank.
I took the fuel line off the unit pump, and although fuel comes through with the key on, with my thumb I can restrict the flow even when I am cranking.
Before I would have 1100 psi or more on the fuel rail while cranking.
Just wanting to see if anyone has taken the "unit pump" disassembled and cleaned. (With success) the picture is from ebay.

s-l400.jpg
 

Gene Trask

Member
Joined
Jan 18, 2021
Messages
35
Points
8
Location
Honduras, IN, USA
Roxor Ownership
Roxor Owner
For any that might be interested. I found this on you tube. Concerning the unit pump. Can't understand it but it at least shows the disassembly.
Mine is obviously not working.

 
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