PLEASE HELP! Jet ski doesn’t want to start in water

Seadoo4898

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Water Crafts
1998 sea doo gsx limited
#1
I have a 2002 sea doo gtx rfi and it doesn’t want to start when the impellar is in the water. It will start on the hose and run fantastic, but is a pain when I back it in at a landing. It died in the middle of the lake yesterday and my buddy and I lifted the back end out of the water so the intake grate was in the air and it popped off instantly. We ended up doing it 3 other times as well. I’m thinking something within my intake under the jet ski is funky. Anything I can try at home before I bring it to a shop? Any suggestions would be greatly appreciated!!
 


JJinSC

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Water Crafts
1997 Sea-doo XP
#2
Could be weak battery, weak starter or low compression or something wrapped around shaft. I would recommend eliminating those with test and inspection.
 

mikidymac

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1997 GSX
1996 XP
1996 HX
1996 SPX
01' Superjet
#3
Check compression before anything else at this point. Running on the hose will tell you nothing.
 

mikidymac

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2001 XP
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1996 XP
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01' Superjet
#5
See what the battery voltage is when cranking and at rest.
Compression is good.
 

Seadoo4898

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Water Crafts
1998 sea doo gsx limited
#6
See what the battery voltage is when cranking and at rest.
Compression is good.
There is a resistance somewhere in the machine. As soon as the prop hits the water it dies. I’ve read that it could be the wrong O ring on the rotary valve plate. But I’ll hook it up to the hose with the battery charger on and see what the volts are.
 

mikidymac

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2001 XP
1997 GSX
1996 XP
1996 HX
1996 SPX
01' Superjet
#13
Running out of the water will not tell you anything. With a load is the real test. Check compression and if that’s fine rotary valve clearance for mechanical issues. On the Injected skis you really need a CanDoo Pro scanner to check anything else.
 

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