Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › misfire › Re: misfire November 10, 2012 at 4:34 am #475699 CharlesParticipant If you suspect an intake leak, run the water hose around on the engine listneing for a change in idle. Just a medium flow out the open hose works well and its safe. Better if the engine is cool.