I'm trying to do a little diagnostics here on a 1.9 that won't start.
It cranks, has spark (at least at no 3) but will not fire.  Anyway, I
want to remove the connector to the Hall unit  (mounted on the side
panel next to the idle control unit to check the voltage (as outlined
in the bentley) and I can't figure out how to release the clip> I
figure it has something to do wiht the spring wire running across the
face of it but not wanting to bugger it, I have not put much pressure
on it. How do you release it??

ONe other point: the resistance across the coil to distributor high
tension lead measures over 10 K ohm. Should I be replacing this??
TIA