Speedster engine stops at 3000RPM

[sop]

Hello,

Hope somebody can help me here.
I've bought my first Seadoo Speedster and went today for a ride. It starts not so good as I've hoped. Another problem is that the right engine stops wenn coming at 3000RPM. It falls out! This is quit annouing also whenn riding slow in harbour it falls out. So very hard to steer in the harbour then.
Whenn bought i've tetsted the comression and this is 3times 9.5 and one time 9.0 this should be good.
The strangest part is whenn opening full throttle it works all fine nothing wrong and goes with 2 person in it and wind approx 45MPH

I hope someone can help me and give me some help.

THNX

 

[seadoosnipe]

Problems...?

Hello,

Hope somebody can help me here.
I've bought my first Seadoo Speedster and went today for a ride. It starts not so good as I've hoped. Another problem is that the right engine stops wenn coming at 3000RPM. It falls out! This is quit annouing also whenn riding slow in harbour it falls out. So very hard to steer in the harbour then.
Whenn bought i've tetsted the comression and this is 3times 9.5 and one time 9.0 this should be good.
The strangest part is whenn opening full throttle it works all fine nothing wrong and goes with 2 person in it and wind approx 45MPH

I hope someone can help me and give me some help.

THNX

You might have a problem in your fuel circuit but for now, I'm trying to figure out your compression. I've never heard it explained as "3 times 9.0". Can you do a compression test with a gage and tell me, after three tests, what is the average pounds per square inch (PSI) that you are getting on your gage.:cheers:

 

[sop]

You might have a problem in your fuel circuit but for now, I'm trying to figure out your compression. I've never heard it explained as "3 times 9.0". Can you do a compression test with a gage and tell me, after three tests, what is the average pounds per square inch (PSI) that you are getting on your gage.:cheers:

Hello,

I did this on the 4 sparking plugs and had on 3 of them 10 BAR and on one avarge 9,3.

Hope you can do here something with.

So you think it is the fuel system?

 

[seadoosnipe]

Compression....

You might have a problem in your fuel circuit but for now, I'm trying to figure out your compression. I've never heard it explained as "3 times 9.0". Can you do a compression test with a gage and tell me, after three tests, what is the average pounds per square inch (PSI) that you are getting on your gage.:cheers:

I had to use a conversion chart to change your bar readings into PSI. Your compression in the 3 cylinders of the 2 engines is good. But, you stated that you had one record 10. This is about a 15 psi difference in compression. This is "bad".

When you do a compression test, a new motor will give you about 10.3 bar. The older the motor, the less your bar rating will be. The lowest you should see is 6.8. But, the most important is the difference between the two cylinders. If you have a difference of .5 bar, then your engine is not running evenly. It'll be out of balance. One piston will begin to try to do all the work, while the other one will lag behind.

The other issue you could have, outside the possibility that your engine is getting weak is your fuel system. Do you know if your fuel lines are still of the grey Tempo lines. These lines have been a problem for several years. If you have them, they need to be removed.

Check your inline fuel strainer. You have a small cup that you can remove and check it for debris.

Finally, check your spark plugs. Look at the bottom of my post. You'll see a link to "snipes korner". There you'll find a chart that will show you pix of what your spark plugs are suppose to look like........:cheers:

 

[sop]

I had to use a conversion chart to change your bar readings into PSI. Your compression in the 3 cylinders of the 2 engines is good. But, you stated that you had one record 10. This is about a 15 psi difference in compression. This is "bad".

When you do a compression test, a new motor will give you about 10.3 bar. The older the motor, the less your bar rating will be. The lowest you should see is 6.8. But, the most important is the difference between the two cylinders. If you have a difference of .5 bar, then your engine is not running evenly. It'll be out of balance. One piston will begin to try to do all the work, while the other one will lag behind.

The other issue you could have, outside the possibility that your engine is getting weak is your fuel system. Do you know if your fuel lines are still of the grey Tempo lines. These lines have been a problem for several years. If you have them, they need to be removed.

Check your inline fuel strainer. You have a small cup that you can remove and check it for debris.

Finally, check your spark plugs. Look at the bottom of my post. You'll see a link to "snipes korner". There you'll find a chart that will show you pix of what your spark plugs are suppose to look like........:cheers:

Yes the diffenrence on one motor and the 2 cylinders is 0,7 bar so thats not good? How can i solve that? Do i then need an complete new motor?

I will go tomorrow to my boat and take some pictures. Could i send them to you from my sparks and the fuel line Where can i see these the best? probably you will see better what's wrong. I see you know very much, sad that you do not live in the Netherlands ;-)

I will try to clean the gasoline filter ( this is what you meant bij fuel strainer, isn't it? )

Thanx for al the help!! I appreciate these very much..

 

[sop]

Yes the diffenrence on one motor and the 2 cylinders is 0,7 bar so thats not good? How can i solve that? Do i then need an complete new motor?

I will go tomorrow to my boat and take some pictures. Could i send them to you from my sparks and the fuel line Where can i see these the best? probably you will see better what's wrong. I see you know very much, sad that you do not live in the Netherlands ;-)

I will try to clean the gasoline filter ( this is what you meant bij fuel strainer, isn't it? )

Thanx for al the help!! I appreciate these very much..

Hello, here I am again.
Next problem there was water in the boat yesterday. Behind the engine at the jetpump I believe is an kabel cominig straight out with an connection of iron and there is comming water in... Does anybody knows what this can be??