Timing Belt/Water Pump HELP D15B

Ok, I'm going to be as detailed as possible. My car starts overheating due to a leaking water pump, and we all know a water pump job equals a timing belt job. I follow the DIY to the "T", installing the water pump with no problem, lining up the timing mark on the crank shaft sproket with the arrow on the block, and making sure the cam shaft is set to TDC. Afterwards I put on the new timing belt, tightned the 14mm tensioner bolt, and put everything back together. NOW, here's where it gets wierd. I start it up BUT, it idles high @2500rpms...I turn it off and try to start it again, and it refuses to start. I wait a while and start it again, and it starts back up but revs @2500rpms...
....Let me know what I could be doing wrong. All the spark plugs were put back in correctly too. Thanks!



