? I thought P0300 was random cylinder misfire, and 301 was cylinder 1 misfire... I couldn't find a 701 from a quick scan through... sure that is the correct code?

An injector pulse test will help determine if it's a faulty injector (but may not help determine if the spray pattern is off) - but injector testers are not cheap.. you can check the fuel pressure as well...

You can test the coil resistance on an injector on-car, or use a noid light on it to verify it gets power..

Assuming it's a specific cylinder, you could also look at the plugs for condition.(wet/dry/fouled/buildup/etc)

I'm not sure about that code however....
-=RB

PS - 701 Is a standard OBDII code for a powertrain/transmission control system error, but it's not specific.. and youre having misfire issues I think..