problem with 750 ss 1996

[jetskiwhooper]

Ok, I have a newley rebuilt SBT engine for my kawasaki 750 ss. New carb, pop off pressure is good, low speed screw is good too. Gas filters and hoses are clean. ITS STILL NOT WORKING, I would GREATLY appreaciat any suggestions to get this puppy running. I Have managed to start it a couple of times, Even have new spark plugs. I can see that the carb is getting gas. When It does run I have to hold the gas down a lot so it wont die ( I know that the idle is ok). PLEASE HElP.........

[Technical Support]

Re: problem with 750 ss 1996

What is pop-off set at? Does it still have the choke? Any mods? What happened to the original motor?

[jetskiwhooper]

Re: problem with 750 ss 1996

there are no modifications. Pop off is good, it was fine on the old carb and now its still good with the new carb. I baught a the ski with a siezed engine that was sitting for a while. The whole thing was in bad shape, I replaced just about everything. I also purchased a 750 ss xi in the same shape and it is working fine now. I know that there are no leaks in the gas tank/hoses. any more suggestions?

[Technical Support]

Re: problem with 750 ss 1996

I don't want 'good' I want a pop-off number.

[Technical Support]

Re: problem with 750 ss 1996

Also, does it make a difference in your fuel system flow if you change the switch selection?

[jetskiwhooper]

Re: problem with 750 ss 1996

I have messed with the pop off pressure for a very long time, I changed it from about 16 all the way up to 26, now it is at 19.

When you say "the switch" do you mean for the gas tank? If so, There doesnt seem to be any difference, I cleaned out the whole gas tank as well as the filters and hoses completely, they were clogged up when I purchased the ski, thank you for your supper fast replies.

[Technical Support]

Re: problem with 750 ss 1996

I would bypass the switch to test, just to see if it's a restriction for you. Put the switch to OFF, remove the reserve line from the tank and put a new line on to the carb for testing.

[jetskiwhooper]

Re: problem with 750 ss 1996

Also, I want to convert my ski into a double carb setup just like it is on my ss xi. are there any problems with that? do I need anything else other than the double carb, intake manifold, and flame arrestor setup?

[jetskiwhooper]

Re: problem with 750 ss 1996

Ok, sounds like a good idea. I'll try it and let you know what happens with that. Thanks

[jetskiwhooper]

Re: problem with 750 ss 1996

Ok, I tried it. still seems to have the same problem... Any chance the problem is electrical?

[addicted2speed]

Re: problem with 750 ss 1996

Dumb Questions: Have you actually checked for any and the quality of spark? Have you been cranking it at all with the plug wires not grounded? If so it could be an electrical problem....Rob

[jetskiwhooper]

Re: problem with 750 ss 1996

Thanks for the idea Rob, Just checked the spark plugs and I am gettting a sufficiant spark. I really dont know what to do, any more suggestions? Please help....anything... The problem is probably something stupid that I overlooked so anything will help. Any chance that a double carb will somehow fix the problem?

[addicted2speed]

Re: problem with 750 ss 1996

First thing you need to do would be to isolate where the problem is. Seems like your gut instinct is that it's fuel related. If its spark or electrically related, this test will tell you. Get some spray carb cleaner. Spray it into the carbs while cranking, if it fires and runs, the carb's the problem, like it or not. If not, then you could have a bad stator or cdi. If all was well before the engine puked, It could be an assembly issue. Personally, if it is a verified fuel problem, the first thing I would do is to dissasemble the carbs, swap the positions of the pilot jets and re-assemble. I made that mistake and had the same problem-no start at all no matter what carb adjustments were made. Good luck....let me know if this helped. rob

[jetskiwhooper]

Re: problem with 750 ss 1996

Rob, I have pretty much let go of the idea that it is a fuel problem, I have tried to start it with a starter spray with no results. Now it wont start at all. Can you help me to isolate the problem---How do I know if its the stator or the cdi box? Keep in mind that I had it running for a while, (the whole time I had to keep the ski running at least 8 mph so it wouldnt die) I have already used my first half a tank of gas breaking it in. Now its not even starting...Also, you probably already assumed this but I have it running on oil/gas mixture. Thanks, Dave