Oil consumption! spoke to soon

After posting power difference the new O-rings made
to my truck it saw the top of a rollback. When I
attempted to start the truck later it would not
start. I picked it back up today. They told me it
was due to air getting into the injectors on the
oil side when they replaced the O-rings. I should
have asked how they cleared the air out, but was in
a hurry. The truck has not failed to start today,
but I have noticed a longer period of cranking
before the motor fires up. I called the service
dept to see why it was taking longer to fire. They
said a couple of the injectors might still have
some air in them. It should clear out in a day or
so, and if it doesn't clear up, bring it back and
they'll check it out again. I have to take it back
next Friday. So they can attempt to buff out a
bunch of scratches they placed on the fenders and
grill while working on the truck.
Phil