Hi, just wondering if anyone has seen this before and has a fix, my son has a DS90 2016, has ran like a champ, zero issues until this weekend. all regular maint is done the last 2 years, new oil(s) and spark plug, air filter. we were out on trail prob 1/2 to 3/4 throttle, and it started to sputter, and loose all top end and sounds like its bogged down but still idles no problem. what we have done so far:
-Changed the spark plug on trail - No change.
-Check and and cleaned air filter - No change (and clean as if it was just put in)
-Replaced fuel filter - no change
-checked oil - clean and at the right level.
-Check gas tank lid to ensure it was venting
I am thinking either ECM or coil?
Here is a video of what its doing:
www.terajen.com/Quad.mp4
Thanks for anyone's input!
-Changed the spark plug on trail - No change.
-Check and and cleaned air filter - No change (and clean as if it was just put in)
-Replaced fuel filter - no change
-checked oil - clean and at the right level.
-Check gas tank lid to ensure it was venting
I am thinking either ECM or coil?
Here is a video of what its doing:
www.terajen.com/Quad.mp4
Thanks for anyone's input!









