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Timing belt, water pump, 3.7 Honda, start up

Last night I replaced my water pump and timing belt on an 09 Acura RL. After I got the harmonic balancer re attached I called it a day. This morning I made sure everything was set and tried to start it. It turned over about the usual amount to start but the just stopped. Interior lights slightly dimmed then I turned it off. Did I do something wrong? If so what? And any ideas on how to fix it? Should I try to start again? Thanks for your help!

Many things can be done incorrectly in this complex repair. To start with, turn the engine over a few times manually via the harmonic balancer, looking for spot-on alignment of the camshaft and crankshaft. If anything doesn’t line up, fix that.