Ltz400 sputter help

164 Views 2 Replies 3 Participants Last post by jhamilton19, 14 d ago

Tyganggg11

Discussion Starter · 17 d ago

i have a 2004 ltz400 that rides fine for about 30 mins, but then it starts to sputter, backfire, bog & die. Plssss help

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amcf18

· #2 · 17 d ago

I would check for a fuel restriction first, from the petcock. Make sure the gas cap is venting as well.

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jhamilton19

· #3 · 14 d ago

Possible coil getting hot and quitting. I’ve had cdi boxes go bad and act like that too. Only way to test that is to swap to a known good cdi and see if it does it anymore.

Yellow 05 Z400: Engine: DRZe fly wheel-DRZe Gaskets-Kibblewhite springs-Wiseco Cam Chain-Stainless reusable oil filter
Hotcams-Hotcams shim kit-HMF full system-DPI Header Wrap-FCR 39 w/AP cover and other mods
Jets-R-Us pull choke-Pro Flo kit with K&N filter-Custom EHS style lid(made it myself)-20 fin inline coolant cooler-Aftermarket CDI(Procrap)-Amsoil only

Everything else:ITP Holeshot HDs all the way around on ITP T-9s 22F/20R-Burgard +2 A-Arms-Fly fat bars-Cycra handguards
Trail Tech fat bar clamps/light plate w/Z400 logo-UM pro peg nerfs-G-force axle-Easy pull clutch lever
Motosport front bumper-PRM 6pack rack grab bar-Pro Armor skids front to back-OMF shrouds
YFZ450 front calipers-YFZ450 brake reservoir-Red Stainless braided lines W/Billet Clamps
Stream Line wave rotors/front-Rear caliper block off plate-PEP steering stabilizer
Billet aluminum Team Yoshimura starter cover-Billet aluminum case saver-Dr.D reverse switch
Tusk billet gas cap

On the to do list:Extra lighting-Dual piston rear caliper-Dyna CDI-And what ever else i find out about in the future.

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