2004 Suzuki Eiger 400cc backfiring

[Wizard]

My Eiger, is not running well. It starts fine, however it kills whenever I throttle it up.

When I hit the gas it sputters and backfires.

I have checked the air filter, it is fine, there is no exhaust impedance, the fuel is fresh and clean, any suggestions?

Thanks in advance.

[DirtDemon]

Has it ever sat for a long period of time? If so, I would guess that the carb needs a good cleaning.

[Wizard]

Thanks DirtDemon-

We drive it almost every week. And I push the snow in the winter with it. It has never sat for much more than say a month.

[DirtDemon]

If you get a bad batch of gas, a month is long enough for a little varnish to build up in the carb. Checking an cleaning the carb shouldn't cost you anything, so I would still start therer. Also check any rubber parts like diaphragms and o-rings for problems. Also, look at the float plunger, it could be hanging up and not letting fuel in the carb. If you don't find any issue in the carb, you are probably looking at a bad CDI, pickup coil, or some other type of ignition problem.

[Ajmboy]

Make sure that choke is not sticking...

* Added manufacturer to your thread title.

[hatchednick]

im haveing the same problem with my 04 suzuki eiger did u ever find out what was causeing this thanks nic

[Wizard]

Hatchednick-

For me it was a sticky choke. I cleaned it with some carb/choke cleaner and it has run great since.

[hatchednick]

Hatchednick-

For me it was a sticky choke. I cleaned it with some carb/choke cleaner and it has run great since.

well for me i sunk it in the lake and ever since then it has ran like sh** when its high rpms it will run fine when it low rpms it wont when its idleing it bakfires threw carb and as soon as the bike warms up you hit the gas bike backfires and dies carb has been cleaned with rebuilt kit at deal 3 times has done nothing flywheel is fine toook hole motor apart and cheaked it

[DirtDemon]

Check your valves and do a compression test.

[Ajmboy]

Hatchednick-

For me it was a sticky choke. I cleaned it with some carb/choke cleaner and it has run great since.

I'm glad to hear that you had solved your issue Wizard...

well for me i sunk it in the lake and ever since then it has ran like sh** when its high rpms it will run fine when it low rpms it wont when its idleing it bakfires threw carb and as soon as the bike warms up you hit the gas bike backfires and dies carb has been cleaned with rebuilt kit at deal 3 times has done nothing flywheel is fine toook hole motor apart and cheaked it

I agree with DD, check your valves/compression/timing. Stupid question...did you dump the fuel after you sank it? Change the plug?

[Mudflap64]

The choke on mine was the biggest problem.