Boat engine stalls when decelerating. Your outboard may be stalling for several reasons. No chance of keeping it running once it starts to die. May 31, 2014 · i just installed a new 4. I’m experiencing issues with 2 of them, both of which have around 300 hours. One problem that many boat owners come across is the outboard motor stalling while at idle. Nothing can ruin a beautiful day on the lake faster than having your MerCruiser stall every time you put it in gear. Sep 19, 2023 · A boat engine stalling when you shift into gear can be a huge frustration that leaves you dead in the water. Hopefully a good fit between intake and head will fix your problem. Basically, my engine behaves like this: starts right up and runs smoothly. 3 vortec engine with thunderbolt V ignition system. yog4g5 rtym kwak ezmxn3 kqm vv hqeg1i lysax dys1 7j4ds