So two months ago I bought this:
http://www.seadooforum.com/showthread.php?60299-New-Boat-Owner
Boat is a 2004 Sportser with the 951 DI.
Finally got to splash it two weeks ago and had an issue. For the first 10-15 minutes in the water, it would not rev past 5000. Limp mode? After that, it cleared up and ran perfect for over an hour. I got 2 second beeps at intermittent intervals during the first 5 minutes, and then they stopped. Low charge? I do not keep a tender on it, but keep the battery off, and the battery is new.
Yesterday it did the same thing for the fist 10-15 minutes, but never cleared up. In fact, it got worse. If I turn off the motor and bob around for a minute, and then turn it on, it will rev to about 6000, and get on plane, but does not feel very strong. Once I throttle back, it will never get back over 5000, and even starts missing and dropping out altogether above 4000. The idle is a little rough, but up to 3000 it is smooth with no issues.
Pulled it out and pulled plugs. Black and fouled, so I replaced them and added some fuel additive the guy at the Seadoo shop was pushing.
Launched it, and it took off to 7000 rpm and felt strong. Unfortunately this lasted only until I throttled back, and we are right back where we started.
It seems to smoke a little more than it should also (I guess, how much should the smoke?).
I was told by the guy I bough it from that he put fresh fuel in it, but I cannot confirm this, and sniffing the filler tube produces a less than fresh fuel smell. I'm on vacation and have only very basic tools. Today I'll try to siphon out the fuel and replace it with premium.
Could old gas cause all of this? I've read a million posts on here about the rectifier, but in all my years of hot rodding, and racing, something in my gut is telling me this a a fuel issue, not spark.
Talked to a Seadoo guru on the phone, and he listed tons of things, mostly related to the sir system. Suggested I use a CANDooPro to run diagnostics. He did offer some basic ideas which I checked.
Power valves are not stuck, and vacuum lines are connected.
ALL lines and hoses appear to be connected except 1. There is a small nozzle on the top of the box over the throttle bodies on the 'passenger' side of the engine. I don't see another vacant nozzle, and have plugged it with my finger while running to no effect.
After being informed that the 951 DI is roughly as complex as a modern F1 motor, I have pretty much given up hope of solving the problems this weekend. But I greatly appreciate any insight you guys might have.
http://www.seadooforum.com/showthread.php?60299-New-Boat-Owner
Boat is a 2004 Sportser with the 951 DI.
Finally got to splash it two weeks ago and had an issue. For the first 10-15 minutes in the water, it would not rev past 5000. Limp mode? After that, it cleared up and ran perfect for over an hour. I got 2 second beeps at intermittent intervals during the first 5 minutes, and then they stopped. Low charge? I do not keep a tender on it, but keep the battery off, and the battery is new.
Yesterday it did the same thing for the fist 10-15 minutes, but never cleared up. In fact, it got worse. If I turn off the motor and bob around for a minute, and then turn it on, it will rev to about 6000, and get on plane, but does not feel very strong. Once I throttle back, it will never get back over 5000, and even starts missing and dropping out altogether above 4000. The idle is a little rough, but up to 3000 it is smooth with no issues.
Pulled it out and pulled plugs. Black and fouled, so I replaced them and added some fuel additive the guy at the Seadoo shop was pushing.
Launched it, and it took off to 7000 rpm and felt strong. Unfortunately this lasted only until I throttled back, and we are right back where we started.
It seems to smoke a little more than it should also (I guess, how much should the smoke?).
I was told by the guy I bough it from that he put fresh fuel in it, but I cannot confirm this, and sniffing the filler tube produces a less than fresh fuel smell. I'm on vacation and have only very basic tools. Today I'll try to siphon out the fuel and replace it with premium.
Could old gas cause all of this? I've read a million posts on here about the rectifier, but in all my years of hot rodding, and racing, something in my gut is telling me this a a fuel issue, not spark.
Talked to a Seadoo guru on the phone, and he listed tons of things, mostly related to the sir system. Suggested I use a CANDooPro to run diagnostics. He did offer some basic ideas which I checked.
Power valves are not stuck, and vacuum lines are connected.
ALL lines and hoses appear to be connected except 1. There is a small nozzle on the top of the box over the throttle bodies on the 'passenger' side of the engine. I don't see another vacant nozzle, and have plugged it with my finger while running to no effect.
After being informed that the 951 DI is roughly as complex as a modern F1 motor, I have pretty much given up hope of solving the problems this weekend. But I greatly appreciate any insight you guys might have.
