OK
Update on starting problem.
I though my Idle air control might be the problem,
So using a old water heater valve that works of vacuum I connected into the hose from air intake pipe (before the throttle body) and the
IAC.
Started it up and it worked as I hoped it would . Engine running creates a vacuum which closed of the air flow to the
IAC.
All good. Even disconnected the vacuum hose and valve opened and engine revs increased marginally just like normal, reconnected vacuum hose and revs dropped to idle around 900 rpm. All good so far.
Let it heat up enough to turn on thermo fans then shut it down.
Waited 2 1/2 hours and tried starting it.
Bugger
Same problem no change.
Still needs to be cranked over for at least 10ecs or so.
Turn it off, restart and its is instant start no problem.
More investigation required.
So have eliminated any problem with the
IAC causing the slow start issue.