[TR] Webers on my TR4

[Lee&John Howard]

My Weber are acting up.  They were running fine and strong until:
I messed around and changed the fuel line to an older braided SS line for
appearances sake. Then, the carbs began to stumble and spit. They would
barely idle and would not accelerate. Changed back to new rubber fuel line
and changed the in line filter. No improvement.
Thinking the mechanical pump must be gone again, switched in an electric.
No improvement.
Checked the timing - basically OK, though hard to tell with the rpms moving
all over the place.
Changed the plugs ( was going to anyway.)
Reset the Webers to their initial settings.  No change.
Finally, remover the cover to the pump. Diaphragm looks OK. There was gas
on top but I assume that leaked through from the bowl as I broke the seal.

So what gives? Could the main jet be clogged? I'll go check that.

Any ideas? Could it still be electrical?

Many thanks

JohnH