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I have a 2004 Polaris 150 Turbo MSX Jet Ski. Cranks and runs just fine but won't rev up. Can anyone help me out here? Thanks! Russ Hart in Hartwell Georgia
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Hey Adam, First thing I would do is run a compression check on each cylinder... you need a minimum of 120psi and no difference between of more than 10psi..run the test with the throttle wide open and turn the engine over for 5-8 seconds.. after you do this, reply back to me on here.. we'll go from there..thanks..,, if it fails this test.. you have found your problem... take it to a qualified professional...
if there is a cable on the end of the lever , replace the cable assembly
if the lever is direct connection, spray with an anti rust penetrant on a regular basis for a few days then try to move it
try using localized heat from a butane torch to break the rust / corrosion seal while trying to move it
You are deal with moisture corrosion in your carburetor. Take the carb off and clean it paying attention to the corrosion on the rubber tipped needle. Also open your electronics box and make sure that it is dry.
Tools(1) A compression gauge (2) a spark gap tester.(3) A Clymer service manual for your engine. (you can purchase from your local dealer. I know all these are expensive but if your going to be a polaris tech you will always need them. Troubleshooting (1) check compression. Look at your Clymer manual for specific psi.all cylinders need to be over 100 lbs and equal each other within 5 lbs.(2) check spark. use a spark gap tester all cylinders should jump a half inch gap. if you have good compression and good spark, fuel is the problem nine times out of ten.Ethanol gas is proven to stay stable in fuel systems for only 30 days in 90 + degree heat. Drain gas tank,clean fuel lines replace and replace all fuel filters. Polaris has a gravity filter under seat, clean it. Finally replace spark plugs, I know spark plugs probably don't look bad but this is a C.D.ignition. Fresh spark plugs means less resistance for the ignition system. The ignition system is week compared to automotive. Test drive polaris, if the problem is still there then there is further steps to take. If your polaris is fuel injected. Pull out your clymer manual. what is great about the Clymer Manual for Novice techs is it gives detailed info on your polaris. Troubleshooting tips and teaches you how your polaris works. If its carburetor then you should clean carburetors. Inside the carbs is another filter that needs to be cleaned. Its not difficult you just make sure you put everything back in proper order. take pictures if you need to.
if the motor is reaching full revs look at the jet assemby for fouling or prop damage. If it is not reaching full revs get authorised mechanic to fix it, it will be cheaper in the long run.
first have you done what is necessary for that such as draining the oil (unless it's a two stroke) draining the gas and refiling it with fresh gas and a couple bottles of gas line antifreeze (it sucks up water) ... for the electrical parts ... spray them with wd40... that will force out any moisture at all and oil does not conduct electricity.
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