If you compare the new walbro fuel pump with the stock fuel pump you will see that the diameter of the neck is smaller than stock (which isn't very good). I don't know why we didn't get the actual WALBRO replacement one that plugs right in (like those GST ppl do); perhaps it's not high flowing enough???
Anyhow, because of the smaller diameter I felt uneasy if I'd just attach the pump to the fuel line. SO this is what I did:
I ended up wrapping that neck with teflon tape until the diameter was the same as stock diameter. Then I put the spacer on it followed by the o ring. (These were the stock parts. I really don't know why we didn't get a new o-ring.) Oh also make sure that there is that metal cap that covers the valve of the neck. Mine popped off when I removed the plastic cap.
Push together as much, then fasten with worm clamp...
that's all I did...and my car seems to run fine (haven't installed boost yet...just loud loud pump!
