225 HPDI Hard to Start

I got my new boat in August and it has a 225 HPDI, my first YAMAHA and I love it.
I have about 18 hours on it, last weekend it did not want to start, turned over very well but no fire at all, all the other HPDI;s fired right up, I thought it was cause it was a little colder out, ended up getting it fired by giving it some throttle, after that it fired up very quickly, seams to be just a first fire after sitting all week, I did check the fuel bob and it was tight...any one alse had a cold start problem????

I have a 04 225 hpdi and mine gives me problems when it's cold starting it. Usually I just give it a little gas and it will fire right up. After that it will start fine all day. I haven't had it looked at so i'm not sure if there's a problem or not.

My boat sits all week too. In the summer or warmer months it starts fine. It only gives problems when the air temp gets in the low 50's or colder. Maybe having it sit all week is the cause.

You might look at your plugs they could be fouled with the oil that is being used right now.....New motor and all..

You have no problems with your engine. My 300hpdi does the same thing, and I know of other guys with the same issues with their HPDIs. It used to bother me, but I am now used to it. Other than that, they are great engines!!

I took it out yesterday afternoon, air temp was lower 60s, fired up and stayed running. Seams as though if it is in the 50's or even cooler cranks alot dies, and have to give it throttle to go,,,maybe it needs some warm coffee,,,yamaha approved of course

Check with your dealer, but I think I heard of some models needing an ecu change for better cold starting.

get in the habit of pumping the ball I have a 225 that will always start hard if I don't. gets real bad when it gets cold

mind starts a little slower when it is bslow 50. It will start, die then crank right back up.