cucvrus
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The top fuel pump is incorrect. The spring over the lever and the slight curve in the lever make it incorrect. It will fit on the CUCV perfectly but the eccentric on the engine does not depress the lever far enough to get fuel delivery. If you hold this pump in your hand and depress the lever it has no resistance until deep into the depression cycle.
The fuel pump on the bottom is the correct one. Note the spring will be under the lever set back into the housing and the lever is short and straight. The resistance is immediate on lever compression and the pumping takes place within the first 3/4" - 1" of compression. I hope that helps.
I attached the correct one from Autozone. https://www.autozone.com/external-engine/fuel-pump/delphi-diesel-fuel-pump-chfp906/489890_0
![1675639251554.png 1675639251554.png](https://www.steelsoldiers.com/data/attachments/645/645668-2d63df1fb38f488dc5a33a870fb52b45.jpg)
The fuel pump on the bottom is the correct one. Note the spring will be under the lever set back into the housing and the lever is short and straight. The resistance is immediate on lever compression and the pumping takes place within the first 3/4" - 1" of compression. I hope that helps.
I attached the correct one from Autozone. https://www.autozone.com/external-engine/fuel-pump/delphi-diesel-fuel-pump-chfp906/489890_0
![1675639251554.png 1675639251554.png](https://www.steelsoldiers.com/data/attachments/645/645668-2d63df1fb38f488dc5a33a870fb52b45.jpg)