Normally no - is it peeing water with good pressure? Are you sure you got the water tube mated to the pump output? if so, you probally messed up the exhaust gasket on the lower unit and its leaking.
If it were me I'd drop the lower unit and verify - better safe than sorry.
Kamikaze
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74 V20 CC with a 150 Johnson (Gone but not forgotten)
89 V20 Cutty with a Tower (Build in process)
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