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stagesrt4 06-10-2010 10:46 AM

just stopped getn spark after an hour of riding....JS550
to start off ill say this.... I ride the hell outta my JS550....I nose dive, ride wheelies, do 180/360s, etc....

i was out doing my usual 2 hour ride after work. After riding for a lil over an hour i was doing some 180s and noticed that ski felt a little sluggish after coming out the hole. And at top end you could feel it lagging a lil and would chug here n there.

So i took it into shore to check for maybe excessive water in hull and/or low fuel. No water in hull and little over half tank, so ok there. Figured id take it back out for another test run, and she wouldNT fire...only turn over and over.....

I have ski at work with me.

Compression is 151 psi PTO side and 155 psi mag side

You can smell that its getting fuel

but plugs dont have one bit of spark...

is there a fuse i can check? or a wire i should look out for?

any help/advice would help greatly

cuzzinolaf 06-10-2010 10:52 AM

I think I only have an inline fuse for my starter on my SJ. I would think you need to check the electrical box out or the stator.

stagesrt4 06-10-2010 11:00 AM

yea...thing still turns over nicely...and damn fast when plugs were out ha

i posted in KAW section on greenhulk, but noone likes to reply to the Kaw threads for some reason.

cuzzinolaf 06-10-2010 11:04 AM

pwctoday? xh20?

It isn't the starter we know.

stagesrt4 06-10-2010 11:14 AM


Originally Posted by cuzzinolaf (Post 101125)
pwctoday? xh20?

It isn't the starter we know.

im not on xh20 and rarely go on pwc...

but may have to sign up if i wanna get some answers ha

stagesrt4 06-10-2010 11:15 AM

i do a shit ton of wave jumping and come down pretty hard sometimes

maybe something came lose in brain box.

the main ground looks lil weak, so may upgrade that as well

Ibreakstuff 06-10-2010 04:44 PM

Check your connections. After that, search PWCtoday for stator specs and test that and the ignition coil. If those check out OK your CDI is toast.

I bet it's connections though.

stagesrt4 06-10-2010 07:57 PM

Thanks Bryan I'll check it out

I just signed up for pwctoday, awaiting approval

MrSnowman 06-10-2010 09:33 PM

pwc isnt much more help sean haha. check your wires sounds like something is loose or your ignition box pooped something

stagesrt4 06-14-2010 08:45 AM

yea no luck

ive cleaned stator/mag cup...was clean still

changed plugs

new motor ground

inspected brain box....clean/dry and fuse was good

next is to test with OHM meter cause im still not getting any spark

stagesrt4 06-14-2010 05:54 PM

CDI has no("0") reading

Time for new cdi unit I guess

MrSnowman 06-14-2010 06:05 PM

sense you know how to test maybe you could helpo me with mine so i can see if i need one before i just buy one for no reason? sense they arent a cheap item

stagesrt4 06-18-2010 08:16 AM

i have an extra CDI if ya need it ryan...

stagesrt4 06-18-2010 08:18 AM

well no luck

i replaced CDI unit and still NO SPARK!!! not in the greatest of moods, but whats new

found out i need new AC unit at my house, trans is out on jeep, brakes failed on neon, etc....isnt life grand ha, end rant.

not sure what to do next if anyone has ideas.

If i knew it wasnt gonna work i woulda taken detailed pics of ebox

Ibreakstuff 06-18-2010 12:29 PM

Bad coil.

cuzzinolaf 06-18-2010 12:33 PM

Buy my SJ.

stagesrt4 06-18-2010 12:38 PM


Originally Posted by Ibreakstuff (Post 101345)
Bad coil.

isnt coil CDI same difference?

it was inginition, wires, and boots..


Originally Posted by cuzzinolaf (Post 101346)
Buy my SJ.


Ibreakstuff 06-18-2010 04:52 PM

CDI Is an electronic box that uses capacitance discharge to time the ignition coil to fire.

CDI stands for Capacitor Discharge Ignition - it fires the ignition coil. The coil(s) have the wires on them that goes to the spark plugs. The CDI unit has a lot of wires going into it, and 2 that go to the coil.

If you bought a whole e-box then you most likely got everything as the e-box is watertight and usually holds everything inside it in a PWC. Some Seadoos for sure don't have the coil or solenoid in the e-box.

stagesrt4 06-19-2010 06:21 PM

No it was just the one module with wires coming out

it says CDI on it

Ibreakstuff 06-19-2010 09:58 PM



Coil (kinda like this, couldn't find an exact pic):

The CDI and Coil are in the e-box with wires running between them.

stagesrt4 06-20-2010 11:49 AM

Ok I replaced coil not CDI then

cuzzinolaf 06-20-2010 01:29 PM


Originally Posted by stagesrt4 (Post 101348)


Sold it yesterday for $4500

Ibreakstuff 06-21-2010 12:00 AM

The coil ohm'd out bad or zero?

stagesrt4 06-21-2010 10:49 AM

i think zero, but i didnt test buddy n his dad did....

so im not sure how accurate they are/were

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