2007 Seadoo gti 155SE intermittent hard start

[dookyle87]

Ok so I have an 07 gti 155se with around 115hrs on it and ever since I've owned it it's had an issue where is sort of hard to start intermittently.

When climb on for the first time in the day it will take 3 or so attempts of cranking before it will finally run.

Once it starts it can be ran all day no issues at all, however if it has been stopped for 3-4 mins then it takes 3 or so atempts to start. Once it has been started it runs great.

Things I've changed
Battery. (Brand new 600amp) tested
Starter
Battery grounds cleaned
Spark plugs

I'm thinking it's gonna be the check valve in the fuel pressure regulator loosing fuel pressure and making it hard to start. Because if it has been under 3 mins it starts right back up

Any advice you can give id appreciate it greatly.

Also I have an 05 RXT fuel pump just sitting here would this fit in the 07 gti 155?

 

[skiasylum]

My 2011 service manual, not sure if it’s the same as your 2007, has the check valve, fuel pressure regulator all part of the fuel pump module. In the fuel diagnostic flow chart if the fuel pumps runs for 2 seconds when you press the start button with good pressure 58psi and you crank or start and it still holds 58psi - fuel system ok.
Fast leak
If it doesn’t hold 58 psi in either case it’s either fuel line/rail is leaking and fix or replace or replace the fuel pump module which includes the check valve, pressure regulator.
Slow leak
Injector leaking, repair or replace then replace fuel pump module again

 

[dookyle87]

I got it! It was the no 1 injector leaking. I'm wondering now if i gotta replace it or just clean it. We shall see

 

[ID62]

You can clean it, it's a very easy job. It's god to have always a cleaned injector with you when you are in vacation.