Hey everyone, i need your help. About two weeks ago i put on a White Brothers E-Series . For a week it ran great. Than it started to act up and it has become worse. I used to be able to ride for a while and it wouldbe fine then all of a sudden it would start backfiring and i couldnt go past 1/2 throttle. then i would let it sit or just go slow and it would go away i tryed to ride it today and i cant even get it past 1/4 throttle. And i also you be able to go full throttle in neautral now i cant go past 1/2 throttle. I dont know what the hell to do. could it be jetting or what help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

So u have not rejeted yet.... That would 99.9% be what is wrong with it. Try going up a size or two on your jets and see what happens.



BoOgIeMaN

 

I agree with BoogieMan. I was having the same problem with my '01 Wolv. Put K&N Power Kit and haven't had a problem since.

 

ok i will try it . Is it hard to rejet?

 

If you have not changed the main jet, you are most likely running lean. The motor gets hot and is not getting enough fuel essentially starving the system.


You probably have a 140 main jet stock- pick up a 145 and a 150 main jet from your dealer and give those a try.

Start with the 145 as this will probably do the trick. Drain you carb bowl, loosen the rubber boot clamps on either side of the carb just enough so you can twist the carb so that the bottom bowl is facing out to the side. remove the 4 screws holding the bowl on(be carfull not to strip the screws) the main jet is right in the middle and is slotted so you can remove it with a flat head screw driver.

Take out the jet and replace it with the new larger one- put everything back together and see how it runs. If it is still acting up try the next larger jet.

Before going to the trouble of rejeting, you can cover up part of your intake snorkle while it is running to see if it runs any better. This will reduce the amount of air entering the carb and richen up the mixture. If this little test makes her run smoother than you will know for certain that re-jetting is in order.

You can also pull your spark plug and check the color. White and dry = Lean and hot BAD!

Let us know how it goes!

 

Not trying to cause an uproar, but most people on these boards want to rejet at the first sign of any kind of problem. I agree that rejetting is nessecary in some cases, but this one ran well for a week then started having problems. This sounds like it could just have some water in the gas. (all gas has some) Or maybe a peice of dirt in the bowl restricting the gas flow. Both of these should be checked first before going and buying new jets. Just pulling out the choke can show you a lean mixture. (about the same as blocking off the air intake) Check your plug to see if it's lean. Listen to see if you have any kind of back fire when letting off the throttle. Try draining the float bowl and see if it helps. If its water or dirt, it should run better after doing this. If not, start trying some of the things mentioned above, but try one at a time so when it does it again, you'll know what to do.

 

I agree with asfastasu, I wouldn't be jumping the gun until you've eliminated some possibilities.

Backfiring is usually associated with with a sparking problem.
The very first thing you should do is unplug the park-brake spark interupter. That thing is almost sure to cause problems sooner or later, and you might as well unplug it now and be done with it.

That said, I'll agree that after putting on a White Bros pipe, you MUST rejet to see and performance gains. But track the problem down first, so you'll actually know what the problem was.

 

I agree that you should check for simple problems before rejetting. In fact I have had several instances where a grain of dirt/sand in the float bowl was enough to cause erratic acceleration. A dirty air filter can also cause problems.

Aside from all the other possible causes, the bottom line is that if a new(high flow) pipe is added; rejetting will almost always be necesasry on a Wolverine/Warrior as they are somewhat lean off the showroom floor.

thenewfiebullet brings up a good point with the E-Brake. Disconect it before it gives you trouble.

 

Does the wolverine have an emrgency park brake ? If so it might have a rev limiter ? See if there is a micro switch located some where near the park brake switch. Usually on the left clutch perch(Banshee, Warrior, i know the Wolverine has no clutch) If you do have this system spray some WD 40 in the micro switch and the try running the machine again. I am not very familiar with the park brake system on the Wolv, but the Warrior was natorious for having this exact problem. If you are still having problems email me and i will go look at my neighbors 2001 Wolverine and see how this system is hooked up. You never know maybe this will help. If the quad ran really good for a week, i seriously doubt it is your jetting.

 

lucey, that's exactly what we were talking about.
If you look under the fenders in front of the gas tank there is a small, white plug-in type connection. Unplug this and and try the throttle. If it runs well, then that was the problem. Leave it unplugged and you won't have to worry about it anymore.

If you still have the same problem you were having before, start looking elsewhere. But I'd still leave that connection unplugged.