sport jet 90 with no spark in a 98 Baja jet boat

scottcboy76

Recruit
Joined
Jul 6, 2014
Messages
3
Read dozens of forums and have not been able to pin point the problem. Ran all the diagnostics and none of the numbers make sense. Red Stator with 878 Ohms and 25 ac volts bad. Yellow wires have burn marks also. Tested three trigger wires and 1000, 1200, 1200. Disconnected black\yellow still week spark and after 3 or 4 sparks does not spark any more. Disconnected both yellow wires and still no spark. Can anyone help?
 

scottcboy76

Recruit
Joined
Jul 6, 2014
Messages
3
Looked on CDI site and said ohms should be for red stator between 500-600. Guess I do not understand if mine is more at 878 does that mean the startor is bad?
 
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dsrace

Seaman Apprentice
Joined
Jul 13, 2013
Messages
33
you need a good meter and the cheaper ones aren't accurate. also better remove your coils and take the covers off and see if the magnets or what ever you want to call them are cracked. i had a similar issue and found one cracked then had spark but still wouldn't run correct so i pulled the flywheel and found 1 broken magnet off the flywheel. i was told that those magnets on the flywheel are issues and if they jam into the stator they can lock the motor and break real parts! so check that for sure, not to hard and ship wreck salvage in Canada has new ones with the better compound they used to glue them to the flywheel. the magnet on the flywheel moved at higher rpm, really mess's everything up. get a new woodruff key if you pull the flywheel so it doesn't break after you put it back together. also i just discovered tonight the issue i have currently having , after rebuilding the fuel pump twice, is that my tank vent was 90% plugged by a mud dobber and spider. also the person that installed the 90* elbow on the vent pointed the elbow up and looped the vent line up and over creating a peatrap effect like a sink, on top of the almost clogged vent. acts like it's dropping a cyl via spark or compression, i knew i had spark so thought the carbs were running out of fuel, which they were lol. it would take off fine and with in 200 yards it would start losing power and then drop to almost nothing and try and start running warmer than it should. buzzer works but never set it off when it happens. had to choke it to restart. also found out there is a check ball in the fuel line out of the tank and the oil injection line that goes into my fuel line right before the pump also has a 2 psi check ball in it. if that ball sticks you'll either fill your tank full of all your 2 cycle oil or fill the pump full of oil.

has anyone else noticed there carbs condensating while running the motor , no matter ambient temp?
 
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kend301

Lieutenant Junior Grade
Joined
Jul 4, 2009
Messages
1,005
Scott , Yes that means the stator is bad .. closed loop in it , you need to start there . The flywheel has nothing to do with ohm readings . However loosing a flywheel magnet is a common failure on older flywheels.
 
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