Bbarnumboy
New Member
Hello and thanks for having me on your forum. I am glad to finally join since your archives of technical data has helped me immensely.
I will try to make this simple, but very clear as to what I am dealing with and how you can possibly help me out.
First off, I am the proud new owner of a 1997.5 GSX Limited with the 951/946 carburetor engine. I picked up the ski for a very good price due to the engine being shot. At first I thought it just needed a top end job, but it ended up being a full engine rebuild. I sent the engine out to Full Bore for their premium rebuild and it came back with everything looking very mechanically sound. I will touch on the things I have done to the engine at the time of rebuild and install and it would be great to get some feedback on any ideas to help me out.
I just got the engine started yesterday for her maiden voyage. She ran just fine, aside from needing to adjust the idle more. I decided to get her on the water and see if I can start the break in process and fix the idle. Once on the water, she did not want to start. Since that time I can only seem to get it to fire up when I turn the gas shut off valve to closed. It will run just fine until the line runs out of gas, maybe 20 seconds. During this time of running, if I turn the gas to on or reserve it will bog real bad and then die. I believe my fuel mixture is way off. So that is my issue, now to educate you on what I have done to get me here.
Full engine rebuild, I also had the Mikuni carbs sent out for a full authentic rebuild, using the proper Mikuni carb rebuild kit. The guys also set everything back per the manual from what I know in regards to the needles etc. I put in authentic synthetic seadoo oil in the injection tank, I primed the oil lines with a drill motor after bleeding the air out as well. I did notice I had to route the oil pump arm a full revolution in order to get the spring tension, and then I lined up the marks to set it in place. (was that wrong)? otherwise the cable will not return because there is not spring tension? I am not certain if this is causing way too much oil or if it is just fine now.
I have read that the 1997.5 has the left side solenoid for the carburetor diaphragms in order to lean out the mixture at a specific rpm/load. I'll read this can be deleted because this is a problem with 1997.5 having engine issues? I also read that in 1998 they got rid of that. The previous owner had it unhooked. what I did was removed the line from the solenoid on the left side of ski that runs to a t fitting, splitting off to supply a vacuum line to the side of each carburetor and capped the ports on the carbs. (Is this completely wrong to do and do I absolutely need those lines going to the carbs back on)?
I also could not locate the idle screw for the life of me. looking down on the carbs, standing on the left side of the ski I noticed a t handle valve underneath the accelerator p housing on the left side/ Magazine carb? I started adjusting it (very hard to get to) with no luck. I hope it was not a fuel mixture screw :-( did I just Fubbar my settings now? I have looked at the manual and pictures and just cannot find the idle set screw.
I also have old gas, I plan to remove that. it is about 7 months old in the tank and has a mixture of oil in it as well for the break in process which seems to be standard.
My last concern was with a few of the crank case lines on the PTO end of the engine on the left side under the carbs. I have 2 bronze fittings coming out, one points kind of Forward and the other points Aft. the manual also says I should have a 3rd port just under these bronze nipples. My block had a bolt in place of this port. The manual says that port should have a check valve and run a line to the right side solenoid that powers the Rave valves. I ran the check valve line from the rave valve solenoid to one of the bronze nipples instead. After much research I found a drawing that showed a vacuum/pressure line on the fuel entry and exit side of the Carburetor that says the line goes from the Carb to engine. It doesn't show the other end and no other drawing I found showed what plugs into these bronze nipples. So I plugged a line from the last carb port remaining on the fuel line side, down to the other bronze nipple on the crankcase (was that wrong)?
I also have no lines to the air box, as the previous owner put some kind of one way check valves inside. I also have a clear tube that goes to the hull somewhere up by the gas tank that has no home to connect to. I also have one small black line left that is coming from the battery/ pump/ vts area in the rear of the ski. as far as I can tell from the drawings, my water lines are all correctly in place, the fuel lines connecting the carbs together and the fuel in and out appear to be correct as well.
I am sorry this was lengthy but I wanted to get the whole background story out there. Hopefully someone can help me sort out my questionable vacuum/ pressure line questions and help with dialing the fuel delivery issue in.
Thank you and glad to be in the community.
I will try to make this simple, but very clear as to what I am dealing with and how you can possibly help me out.
First off, I am the proud new owner of a 1997.5 GSX Limited with the 951/946 carburetor engine. I picked up the ski for a very good price due to the engine being shot. At first I thought it just needed a top end job, but it ended up being a full engine rebuild. I sent the engine out to Full Bore for their premium rebuild and it came back with everything looking very mechanically sound. I will touch on the things I have done to the engine at the time of rebuild and install and it would be great to get some feedback on any ideas to help me out.
I just got the engine started yesterday for her maiden voyage. She ran just fine, aside from needing to adjust the idle more. I decided to get her on the water and see if I can start the break in process and fix the idle. Once on the water, she did not want to start. Since that time I can only seem to get it to fire up when I turn the gas shut off valve to closed. It will run just fine until the line runs out of gas, maybe 20 seconds. During this time of running, if I turn the gas to on or reserve it will bog real bad and then die. I believe my fuel mixture is way off. So that is my issue, now to educate you on what I have done to get me here.
Full engine rebuild, I also had the Mikuni carbs sent out for a full authentic rebuild, using the proper Mikuni carb rebuild kit. The guys also set everything back per the manual from what I know in regards to the needles etc. I put in authentic synthetic seadoo oil in the injection tank, I primed the oil lines with a drill motor after bleeding the air out as well. I did notice I had to route the oil pump arm a full revolution in order to get the spring tension, and then I lined up the marks to set it in place. (was that wrong)? otherwise the cable will not return because there is not spring tension? I am not certain if this is causing way too much oil or if it is just fine now.
I have read that the 1997.5 has the left side solenoid for the carburetor diaphragms in order to lean out the mixture at a specific rpm/load. I'll read this can be deleted because this is a problem with 1997.5 having engine issues? I also read that in 1998 they got rid of that. The previous owner had it unhooked. what I did was removed the line from the solenoid on the left side of ski that runs to a t fitting, splitting off to supply a vacuum line to the side of each carburetor and capped the ports on the carbs. (Is this completely wrong to do and do I absolutely need those lines going to the carbs back on)?
I also could not locate the idle screw for the life of me. looking down on the carbs, standing on the left side of the ski I noticed a t handle valve underneath the accelerator p housing on the left side/ Magazine carb? I started adjusting it (very hard to get to) with no luck. I hope it was not a fuel mixture screw :-( did I just Fubbar my settings now? I have looked at the manual and pictures and just cannot find the idle set screw.
I also have old gas, I plan to remove that. it is about 7 months old in the tank and has a mixture of oil in it as well for the break in process which seems to be standard.
My last concern was with a few of the crank case lines on the PTO end of the engine on the left side under the carbs. I have 2 bronze fittings coming out, one points kind of Forward and the other points Aft. the manual also says I should have a 3rd port just under these bronze nipples. My block had a bolt in place of this port. The manual says that port should have a check valve and run a line to the right side solenoid that powers the Rave valves. I ran the check valve line from the rave valve solenoid to one of the bronze nipples instead. After much research I found a drawing that showed a vacuum/pressure line on the fuel entry and exit side of the Carburetor that says the line goes from the Carb to engine. It doesn't show the other end and no other drawing I found showed what plugs into these bronze nipples. So I plugged a line from the last carb port remaining on the fuel line side, down to the other bronze nipple on the crankcase (was that wrong)?
I also have no lines to the air box, as the previous owner put some kind of one way check valves inside. I also have a clear tube that goes to the hull somewhere up by the gas tank that has no home to connect to. I also have one small black line left that is coming from the battery/ pump/ vts area in the rear of the ski. as far as I can tell from the drawings, my water lines are all correctly in place, the fuel lines connecting the carbs together and the fuel in and out appear to be correct as well.
I am sorry this was lengthy but I wanted to get the whole background story out there. Hopefully someone can help me sort out my questionable vacuum/ pressure line questions and help with dialing the fuel delivery issue in.
Thank you and glad to be in the community.
