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SVTPerformance's Chain of Restaurants
Road Side Pub
Jet Ski People - Can't Figure Out Where Oil Is Leaking
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<blockquote data-quote="Sirhc7897" data-source="post: 14294052" data-attributes="member: 10294"><p>Are you checking the oil level with it warmed up and sitting level in the water or level on the trailer....The 4-tec motors are notoriously tricky about getting a good oil level reading to start with. They need to be warmed up almost to operating temp and sitting absolutely level...You'd likely never see it smoke as the exhaust exits below the water line. The TOPS valve/module is known to be a problem on them. Some are known to leak around the supercharger shaft also. The driveshaft seal (at the motor, not thru hull) could be bad also...</p><p></p><p>Hell, those motors only hold around 2 1/2 to 3 quarts of oil if memory serves. For you to be losing that much oil it would some you've got something serious going on...I would think you'd be seeing it if it was getting into the hull (the siphon bilge system on those skis pretty well sucks and I would think there'd be an oily residue all over the lower half of the hull interior where the bilge water pools...). If you can't see anything a trick would be to throw a shop towel down there next time you ride and see if it gets any oil residue on it...At least then you could isolate if the problem was a leaking external seal or if the motor was "eating" it....</p><p></p><p>What about your coolant bottle? I know when I had head gasket issues on my RXP the coolant bottle on the front of the motor would get very milky...If you've had the head pulled for any reason they are notorious for developing leaks there also. The decking is not very good on them (hence why they run a thick head gasket from the factory)...Also, if you've installed a block guard (presses into the cooling passages to help with flex on high boost applications) those are bad about causing sealing issues too...</p><p></p><p>Lots of variables but I'd isolate if it was leaking into the hull or being lost into the motor first. At least then you'd know which troubleshooting route to take off on...</p><p></p><p>And yes, visit greenhulk. Jerry and those guys over there are a wealth of PWC related info...</p></blockquote><p></p>
[QUOTE="Sirhc7897, post: 14294052, member: 10294"] Are you checking the oil level with it warmed up and sitting level in the water or level on the trailer....The 4-tec motors are notoriously tricky about getting a good oil level reading to start with. They need to be warmed up almost to operating temp and sitting absolutely level...You'd likely never see it smoke as the exhaust exits below the water line. The TOPS valve/module is known to be a problem on them. Some are known to leak around the supercharger shaft also. The driveshaft seal (at the motor, not thru hull) could be bad also... Hell, those motors only hold around 2 1/2 to 3 quarts of oil if memory serves. For you to be losing that much oil it would some you've got something serious going on...I would think you'd be seeing it if it was getting into the hull (the siphon bilge system on those skis pretty well sucks and I would think there'd be an oily residue all over the lower half of the hull interior where the bilge water pools...). If you can't see anything a trick would be to throw a shop towel down there next time you ride and see if it gets any oil residue on it...At least then you could isolate if the problem was a leaking external seal or if the motor was "eating" it.... What about your coolant bottle? I know when I had head gasket issues on my RXP the coolant bottle on the front of the motor would get very milky...If you've had the head pulled for any reason they are notorious for developing leaks there also. The decking is not very good on them (hence why they run a thick head gasket from the factory)...Also, if you've installed a block guard (presses into the cooling passages to help with flex on high boost applications) those are bad about causing sealing issues too... Lots of variables but I'd isolate if it was leaking into the hull or being lost into the motor first. At least then you'd know which troubleshooting route to take off on... And yes, visit greenhulk. Jerry and those guys over there are a wealth of PWC related info... [/QUOTE]
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Jet Ski People - Can't Figure Out Where Oil Is Leaking
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