Tzerambo56
New Member
Hey everyone,
I’ve been trying to track down a starting issue with my 2001 Sea-Doo Challenger 2000 (Mercury 240 EFI M2).
The boat starts and runs great when cold — fires right up on the hose and at the ramp. It runs perfectly all day as long as you don’t shut it off. It idles smooth, gets up to 50 mph, and has strong takeoff.
The problem is after it gets warm and you shut it off. It doesn’t want to start back up. When you try, it’ll pop once like it wants to fire, then just crank and crank. If I manually hold the throttle wide open, it eventually clears out and starts — like it's flooded. One time, I even saw fuel dripping out of the throttle butterflies, so it was definitely overfueling. That’s when I replaced the 3-wire temp sensor on the port side.
After replacing that sensor, I took it out with the engine cover off and it started up fine four separate times while warm. Thought I had it solved.
But today I put the engine cover back on, and the hot start problem came right back. Crank, crank, crank — just like before.
I’m thinking it could be a fuel pressure regulator issue. I plan to check fuel pressure soon, but if anyone has had this issue before or has tips, I’d really appreciate it.
Thanks in advance!
I’ve been trying to track down a starting issue with my 2001 Sea-Doo Challenger 2000 (Mercury 240 EFI M2).
The boat starts and runs great when cold — fires right up on the hose and at the ramp. It runs perfectly all day as long as you don’t shut it off. It idles smooth, gets up to 50 mph, and has strong takeoff.
The problem is after it gets warm and you shut it off. It doesn’t want to start back up. When you try, it’ll pop once like it wants to fire, then just crank and crank. If I manually hold the throttle wide open, it eventually clears out and starts — like it's flooded. One time, I even saw fuel dripping out of the throttle butterflies, so it was definitely overfueling. That’s when I replaced the 3-wire temp sensor on the port side.
After replacing that sensor, I took it out with the engine cover off and it started up fine four separate times while warm. Thought I had it solved.
But today I put the engine cover back on, and the hot start problem came right back. Crank, crank, crank — just like before.
I’m thinking it could be a fuel pressure regulator issue. I plan to check fuel pressure soon, but if anyone has had this issue before or has tips, I’d really appreciate it.
Thanks in advance!
