93 Seadoo XP

[Crash_789]

I have a 93 Seadoo XP. Having some starting concerns that need to know why. When it is running it runs very good. The concern is a few things;

1) I get a long beep sound that goes off when starting, but leaves once the machine starts moving. Very annoying

2) I am looking to get a smooth start with one push of the button. However, sometimes it takes 5-15 minutes to get it start. I try not to use the choke in fear of flooding, and sometimes need to use the throttle lightly to get it to start.

3) What is the other red cap opposite to the fule cap? It has a green indicator on it.

4)What is the module connected to the main engine? It has 3 prongs with nothing hooked up to them.

Thanks for the feed back gents/ladies

JH

 

[eavega]

I have a 93 Seadoo XP. Having some starting concerns that need to know why. When it is running it runs very good. The concern is a few things;

1) I get a long beep sound that goes off when starting, but leaves once the machine starts moving. Very annoying

Not sure about this, but the only horn on that machine is overheat? The heat sensor may be failing. Its the small plug at the top of the head. Not sure if there is an audible oil alarm on those skis. If there is, it can be either one.

2) I am looking to get a smooth start with one push of the button. However, sometimes it takes 5-15 minutes to get it start. I try not to use the choke in fear of flooding, and sometimes need to use the throttle lightly to get it to start.

If its cold, you are going to need that choke. Also if you have any loss of pressure in the fuel system over time, you'll need the choke to close to increase draw pressure on the fuel. Don't be afraid to use the choke. It should certainly not take 5-15 minutes to start up. I'm surprised your battery lasts that long! Pull the choke until the motor turns over by itself. I'll use the choke until the motor stumbles on, it will run smooth for a few seconds then start stumbling as it starts running rich, then kill the choke and bump the throttle until motor revs reliably.

3) What is the other red cap opposite to the fule cap? It has a green indicator on it.

That is the trim indicator? do you have an 'up-down' button labeled VTS under the start button? That is the trim button. The cap with the green indicator tells you the position of the pump nozzle. Trim is set down when you are sitting in the water trying to take off to help lift the stern out of the water (better hole shot), as you come on plane, you adjust the trim up to get more of the nose of the ski out of the water. That helps when water is flat to get you moving faster. You also tend to trim down if the boat is bouncing too much due to rough water, which smooths out the ride.

4)What is the module connected to the main engine? It has 3 prongs with nothing hooked up to them.

.I assume you are looking at the post for grounding the spark plug when you pull them off. Keeps from getting an errant spark in the engine compartment if you crank over the engine with the plug wires disconnected.


Hope that helps.

E

JH[/QUOTE]

 

[1969iggy]

Not sure about this, but the only horn on that machine is overheat? The heat sensor may be failing. Its the small plug at the top of the head. Not sure if there is an audible oil alarm on those skis. If there is, it can be either one.

[/QUOTE]

I'd agree with this. I have a 1995 seadoo sportster that had the same thing... it was intermittent at first. Would come on at start up and go away at speed. Then it started coming back on at random times. This season it came on and would not go off... so i pulled the plug off the top and moved on with life. I haven't found a replacement yet for a reasonable price... i think it may be the same engine as yours.

 

[OldSchool]

The trim indicator is without question the opposite red "cap"

The beeper can alert you temps and oil level. If you just start the engine and it is sounding it is not a temp related matter but the sensor will play hell with you. You can always disconnect/ground to verify change with single wire on top of cylinder head.

I do not know if the low oil actually triggers audible, it does engage a light above the fuel gauge on those models. It was pretty high tech for 93


If the machine struggles to start, try using WOT and see if it fires up. you mentioned the 1/4 throttle deal and there are many older skis that won't start without throttle. If it runs fine when it is started, I would make sure that the choke is drawing fuel and the butterfly valves are closing all the way too. It can be a fuel delivery matter and with older skis it can be worn rotary valve. Low compression can also make a hard starting engine. If I owned that boat, when it was cold I would pull the choke at first start and hold it for 5-10 seconds or less if it starts earlier. If it didn't start I would wait about 30 seconds and repeat. If it didn't fire I would go WOT if it burns off a bunch of smoke and idles really rough it would be flooded, if not the thing was just struggling to draw fuel.

 

[1969iggy]

The trim indicator is without question the opposite red "cap"

The beeper can alert you temps and oil level. If you just start the engine and it is sounding it is not a temp related matter but the sensor will play hell with you. You can always disconnect/ground to verify change with single wire on top of cylinder head.

I do not know if the low oil actually triggers audible, it does engage a light above the fuel gauge on those models. It was pretty high tech for 93


If the machine struggles to start, try using WOT and see if it fires up. you mentioned the 1/4 throttle deal and there are many older skis that won't start without throttle. If it runs fine when it is started, I would make sure that the choke is drawing fuel and the butterfly valves are closing all the way too. It can be a fuel delivery matter and with older skis it can be worn rotary valve. Low compression can also make a hard starting engine. If I owned that boat, when it was cold I would pull the choke at first start and hold it for 5-10 seconds or less if it starts earlier. If it didn't start I would wait about 30 seconds and repeat. If it didn't fire I would go WOT if it burns off a bunch of smoke and idles really rough it would be flooded, if not the thing was just struggling to draw fuel.

When you say "low oil" do you mean in the reservoir or in the engine itself? I assumed the sensor was for temperature, and there was a separate circuit for the reservoir....

 

[OldSchool]

The reservoir for the injector oil. I know that one of my machines was extra sensitive to the oil level being under 50% and it would light up while using audible. It is 3 years newer though. The temp sensor is most likely the source, at a minimum you can verify connection and ground it out to attempt a reproduction of the sound. Needs power to test though.

Oh and there is a different circuit. That doesn't mean the alarm can't be shared.

 

[1969iggy]

OK, that makes sense. Mine had the oil pump go... so it has about half a tank of oil in it, so it continues to have the oil that can move around, but it's not pumping any out into the engine. My understanding (limited as it is) was that I couldn't just remove the tank because the line that goes to the pump needs to have oil in it. So i left it and just pre-mix. It's a $3200 boat that i have had for 6 years, and other than gas and oil i haven't done much to it... reverse cable broke and i replaced that. that's it... cheap tubing fun with low gas consumption...

 

[Crash_789]

SO just to clarify the red dial on the left has to do with the VTS. I tested the button tonight and it didn't move. I also included the picture of the part with the 3 prongs on it, just to clarify.
Thanks for all the good info!! New to the game and just trying to learn as much as I can so it saves me money from taking it to a shop.

Not sure about this, but the only horn on that machine is overheat? The heat sensor may be failing. Its the small plug at the top of the head. Not sure if there is an audible oil alarm on those skis. If there is, it can be either one.



If its cold, you are going to need that choke. Also if you have any loss of pressure in the fuel system over time, you'll need the choke to close to increase draw pressure on the fuel. Don't be afraid to use the choke. It should certainly not take 5-15 minutes to start up. I'm surprised your battery lasts that long! Pull the choke until the motor turns over by itself. I'll use the choke until the motor stumbles on, it will run smooth for a few seconds then start stumbling as it starts running rich, then kill the choke and bump the throttle until motor revs reliably.



That is the trim indicator? do you have an 'up-down' button labeled VTS under the start button? That is the trim button. The cap with the green indicator tells you the position of the pump nozzle. Trim is set down when you are sitting in the water trying to take off to help lift the stern out of the water (better hole shot), as you come on plane, you adjust the trim up to get more of the nose of the ski out of the water. That helps when water is flat to get you moving faster. You also tend to trim down if the boat is bouncing too much due to rough water, which smooths out the ride.

.I assume you are looking at the post for grounding the spark plug when you pull them off. Keeps from getting an errant spark in the engine compartment if you crank over the engine with the plug wires disconnected.


Hope that helps.

E

JH

[/QUOTE]