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Chester
Chester, Jet Ski Repair Expert
Category: General
Satisfied Customers: 52
Experience:  Jet Ski Mechanic
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I have a 1996 seadoo xp.i have cleaned the carburetors and

Customer Question

I have a 1996 seadoo xp.i have cleaned the carburetors and put in new kits.it cranked and ran so I took it to the lake and rode it a short time.next day it wouldn't crank so I took the plugs out and turned the engine over and gas came out the spark plug hole.what could cause this
Submitted: 4 months ago.
Category: Jet Ski Repair
Expert:  jetskigreg replied 4 months ago.

When you put carb kits in you either did not put needle valve spring in or you changed spring out to a lower tension spring if you dont know how to perform a proper pop off test then you need to take somewhere to get it done. They have to pop off at 20 lbs. Pressure and there is a special tool to perform this test. When the engine is shutoff the fuel tank builds about 2.5 lbs of pressure because it is a plastic tank and that pressure gets forced through fuel lines if you dont have proper spring tension it will go through carbs and fill cylinders a temporary fix is to simply shut off the fuel valve when your done using it