shattered00
Active Member
Here is the quick background. A month ago this ski was running almost perfect. I drove it for around 10-15 hours during a weekend. The fuel selector valve allowed me to turn past the points of reserve or fuel options with slight force but didn't seem to affect the ski getting fuel. Afterwards, I noticed a broken 4-pin Deutsch plug wire and replaced it few weeks ago and haven't run it on the water since. The jet ski cranked right up out of the water after the new connector was installed. It had slight issues with no throttle response maybe 5 times out of the whole weekend (i.e. I would press the throttle and get no response but when I let off completely and pressed it again the ski would respond with no issues). A specific example was when I was trying to dock on an EZ Port dock and the ski was tilted slightly up on the entry portion of the dock, I gave it throttle and it had no response (no RPM increase etc.). Also, it began to have issues staying cranked during idle where I would have to give slight throttle to keep it from dying and I thought the idle screw just needed to be adjusted. I didn't think much of it at the time, but now I wonder if it is related to the "new" problem?
Yesterday, I went to the lake and launched the ski but it would not turn over. The starter was trying just fine, and the battery was fully charged. Near the beginning of trying to crank it, the ski started once for a second at most and then immediately died. I got the ski out of the water, conducted a spark plug test which showed it was getting spark just fine. There was no fuel where the spark plugs were and the fuel filter assembly housing had very little fuel in it.
Obviously, the carburetors are not getting fuel. I have read on other posts here to check the fuel lines by detaching them and sucking fuel from the carbs manually to see, checking the pulse line, and a few other things like replacing the fuel baffle. I am hoping to narrow down what the problem can be without throwing unnecessary money at the ski. Any suggestions on what is the most likely problem before I jump into this things?
1) Carburetors rebuilt with Mikuni kit
2) Fuel lines all switched away from TEMPO
3) Newly rebuilt engine with about 15 hours on it
4) New aftermarket fuel selector
5) All of the stainless steel clamps on the fuel sender and the corresponding carb attachment points are tight
6) The aftermarket fuel filter (the inside mesh piece) that was new has already cracked in the plastic which appears to have been eaten away by the fuel
7) The component that the fuel filter sits in (housing) screws tight but had to work at it, so maybe it is not sealing properly - o ring appears to be in good condition and was new when I bought it during rebuild
TLDR:
Freshly rebuilt ski is not receiving fuel after it had been running mostly fine for several hours minus slight no throttle response last time it was on water occurring only few times during entire weekend. Is it likely that the problem could be the fuel filter housing that is not sealing which is allowing air in or is that probably too good to be true since that would be an easy fix?
Thank you for any direction on where to start.
Yesterday, I went to the lake and launched the ski but it would not turn over. The starter was trying just fine, and the battery was fully charged. Near the beginning of trying to crank it, the ski started once for a second at most and then immediately died. I got the ski out of the water, conducted a spark plug test which showed it was getting spark just fine. There was no fuel where the spark plugs were and the fuel filter assembly housing had very little fuel in it.
Obviously, the carburetors are not getting fuel. I have read on other posts here to check the fuel lines by detaching them and sucking fuel from the carbs manually to see, checking the pulse line, and a few other things like replacing the fuel baffle. I am hoping to narrow down what the problem can be without throwing unnecessary money at the ski. Any suggestions on what is the most likely problem before I jump into this things?
1) Carburetors rebuilt with Mikuni kit
2) Fuel lines all switched away from TEMPO
3) Newly rebuilt engine with about 15 hours on it
4) New aftermarket fuel selector
5) All of the stainless steel clamps on the fuel sender and the corresponding carb attachment points are tight
6) The aftermarket fuel filter (the inside mesh piece) that was new has already cracked in the plastic which appears to have been eaten away by the fuel
7) The component that the fuel filter sits in (housing) screws tight but had to work at it, so maybe it is not sealing properly - o ring appears to be in good condition and was new when I bought it during rebuild
TLDR:
Freshly rebuilt ski is not receiving fuel after it had been running mostly fine for several hours minus slight no throttle response last time it was on water occurring only few times during entire weekend. Is it likely that the problem could be the fuel filter housing that is not sealing which is allowing air in or is that probably too good to be true since that would be an easy fix?
Thank you for any direction on where to start.
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