Hello all,
The fuel pump was leaking some gas so I bought a replacement and reinstalled it. Now the truck won't start. Is there a trick to reinstalling the pump? The arm on the pump seems to rest on top of the camshaft. Is this correct? Any and all help is appreciated!

 

Which engine?

 

Inline Flathead Six. Sorry for leaving that out.

 

Here is a picture of mine. It is a 46 "G" engine but is very similar except the shape of the arm. Actually an "H" pump with the "G" arm!