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well they say 10-15 % differance between cylinders is acceptable. and 150+ is good compressions for those motors. i have a 95' spx. also check the oil in the impeller housing. you have to remove the venturi on the impeller pump. very easy like 4 bolts. just be sure not to snap any off...then its not so easy. investing in some pb blaster or sometype of penetrating oil might be a good idea. then you will see a nose cone on the housin. three bolts and a filler hole. remove the fillhole with an alen key and use a peice of papertowel or something and see if there is any water in it. the oil should be filled up to the botom of the threads on the fill hole. i just had to rebuild my housing because i didnt check that and it was bone dry. froze all the bearings..like 200$. or you can check it and if it needs oil its like 15$ and your local seadoo dealer and 5$ for locktite for the filler hole plug. also you might want to run some seafoam or marvles mystery oil in your gas to help clean out the carbs a bit if itll run. good luck
 
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