The filters looked ok, I changed them anyway.

There was air in the lines.

"Scott Vernon" wrote

"Bart Senior" wrote ...
It didn't run at all until I changed the filters and bleed the
system.

Because the filters were clogged, or you had air in the system?
If the filters were clogged, the new one may have restriction already.
Did you inspect the rubber gasket? Do you have 2 fuel filters?

SV

I'll bet it's either the fuel pump or else the return line. Either
of those fits the circumstances.