New guy here with a 97 slt 780

CamaroRacing12 · 02-10-2010, 03:35 AM

hey guys whatsup! i bought my slt 780 beginning of last season and used it all summer. i loved the ski, stable good ride and with one person on it it really hauled a$$! i like the color scheme actually (pic in sig) thing was pretty reliable until the very last time i took it out, felt like a cylinder stopped working. is it possible thatit was just because of the el cheapo walmart oil i bought fouled out the plug or do u think i got a more serious cylinder/piston issue? i didnt get a chance to look into it before i winterized it....

but just saying hi and ima be a regular on here and post all the time!

Tom V · 02-10-2010, 05:47 PM

Check your compression and tell us what you get.

CamaroRacing12 · 02-10-2010, 05:52 PM

yea im prolly gonna dig into it in the spring time when it is warm out. right now i am away at school and plus its snowing

but i will def check the compression then and post it up and revive this thread then

engr146 · 02-10-2010, 08:08 PM

you need to see if you have the cdi upgrade kit installed,or the defective stock one , see (service bulitin) on www.greenhulk.com I love PWC todat,but polaris is that site, also the original fuel lines need replacement..

CamaroRacing12 · 02-11-2010, 12:24 AM

what would that have to do with a cylinder going out?

785 lugs · 02-11-2010, 07:45 AM

theres no cdi update for your fjui motor thats on the domestic motors only . check compression and you'll probrably need to redo your carbs and check your fuel lines and fuel switch for any blockage

CamaroRacing12 · 02-11-2010, 02:33 PM

yea i think i might bring it toa dealer to get the carbs re done unless i can get someone to help me with it. i've never rebuild carbs before or tuned them. i feel like tuning them after reinstalling them is gonna be the thing i wont know how to do.

engr146 · 02-12-2010, 02:12 PM

I was looking @ 780 sltx with (red motor) domestic ,that needed the update kit ,one cylinder would not fire due to bad cdi/stator , upgrade.kit needed installation.

engr146 · 02-12-2010, 02:28 PM

You should have a red engine (domestic) not blue (fuji)

How to test CDI, Magneto stator coils & Hall Effect sensors on domestic engines
I think this topic deserves its own thread.

There is often confusion regarding the four different ignitions systems on the red domestic Polaris PWC engines.

Blue Fuji engines are not covered in this thread.

Domestic carburetor engines made from 2000 to 2004 use a newer and more reliable CDI system. Older domestic engines that have the Ignition System Update Kit installed also use this newer CDI system.

Domestic engines made from 1996 to 1999, that do not have the Ignition Update Kit installed, use a different CDI and stator design.

The 1996-1999 two cylinder engines also have a different ignition coil design than the newer system.

There are two different types of stators for the domestic engines with CDI.

The original domestic ignition CDI+stator design was factory installed from 1996-1999 on all two cylinder engines, and the 900cc and 1050cc three cylinder engines.

The 1999 model year 1165cc '1200' engines already the 'newer' ignition type, so there is no update kit for them.

CamaroRacing12 · 02-12-2010, 02:29 PM

i have a blue engine