At high rpms bike boggs and back fires...

[jam1232005]

Having problems , ive seen post on making a filter on some tube or what not but i really dont understand much is there anyone who can post pics on what i should do or give me step by step instructions

I also seen somewhere that the bogging comes from too much oil being on the bike, i check the dip stick but the dam thing is chrome and the oil is nearly transparent so i cant really see anything on the stick.. And also i check the eye sight glass towards the bottom of the motorcycle and when the bikes on the kickstand i see no oil in the eyesight , but when i hold the bike straight up the oil level rises past the full line

Im just confused?? The bike is new and after leaving it idle and on the bike starts the smell like something is burning what might it be? The bike has 14 miles

What should i do??

[z250gs]

As for the smell of burning, other members with new bikes have reported the same smell. eg check this reply from another member, http://zongshenforum.com/forum/index.php?topic=44.msg642;topicseen#msg642

In regard to the "bogging", how high engine revs are you doing? The user manual suggests keeping revs low during first 300miles or so. I wouldn't thrash just yet with the miles you've done. Keep the revs below 5 thousand and top speed below 50mph. The engine is still tight during the first 300mile and will be running hot. The manual tells you how to run the bike in so its best to follow the design engineers run-in procedure.

You might check the carby air cleaner is not too oiled up. Mine was. The carby could be cause of backfire, so probably best to take it back to dealer to fix. Some of the dealer's aren't preparing the bikes to a very good standard. While you're at it get the chain tension checked as well in case it's too tight or slack. It won't be the cause of your problems but get it checked any way.

It sounds like the oil level is a bit too high but if it disappears off the sight glass when on the stand then its not too much over. But it should be between the Low and High marks.  You could check the plug type and gap are correct as they can cause missfiring. Take the plug out when the engines cool and check gap as per manual. If you haven't noticed, the manual is hidden under the seat.

At this stage and while the bike is under warranty you will be best to avoid modifying the bike in any way, so I wouldn't be touching the anti pollution stuff. There are probably tens of thousands of these bikes all over the world and only a handful of riders have modded them. My advice is don't touch anything unless you know what you're doing and are prepared to risk voiding your warranty.

[jam1232005]

to clarify things the motorcycle has no warranties we bought it as is from a dealership its a 2006 gs250 and only had 2 miles when we took her home.... now i know you said not to mess with stuff but i seen on another thread to but a breather filter and i did -__- lol  its looks pretty cool as well and i test drove it with that and there was no bogging but i still knew that the too much oil was still a problem so mr.smart guy here (me) decided to try to drain some out through  this big plug looking thing on the left bottom side of the bike and as i was loosening it noting was coming out and then once the plug unlocked it shot right out since it has a spring right underneath it, all the oil spilled every where for about 10 mins i was super upset, instead of just letting out a little bit of oil i let it all out!    .... well after it took me about 30 mins to get the dumb plug back on i checked the oil eye glass thing and theres no oil now at all, so now i guess imma have to go to kragen and buy some oil, how much should i put into the bike and what kind of oil should i use it has 17 miles ....

after the oil all spilled out i have NOT started the bike...

[z250gs]

Its not funny is it! What a mess. Same happened to me but I had the plastic container ready and caught the lot ok.

Yeah the sump takes only just over 1 litre oil so I usually put in about 900ml then top up carefully. Some oil is held in the oil filter-thats the held behind that circular cover you can see in your pic at about 1 oclock to the crank cover. You just undo the three 8mm screws and the filter  (looks like a cotton reel in shape) is behind the small cover. There's no spring there but some oil will dribble out, so dont clean your floor too thoroughly just yet!

This is the main filter so you may want to replace/or clean it up before replacing it. The bit you dropped when you removed the sump plug is just a coarse filter.

There is only about 100ml of oil or less between the LOW and High marks on the oil level sight window so watch it as you top it up.

The oil type in my manual says to use SF 15w40. I only use oils that are designed for motor cycles. If you use car engine oil and it contains friction modifiers you'll end up with a slipping clutch so maybe best to stick to the proper M/cycle oils. Good luck!! 

[jam1232005]

wait... so i also have to clean the filter?? because all i did was add new oil,, and i took a spin around the block and so far so good.

this is the oil i changed it too

one on right  




PS HAPPY THANKS GIVING!!

[z250gs]

wait... so i also have to clean the filter?? because all i did was add new oil,, and i took a spin around the block and so far so good.

this is the oil i changed it too

one on right  




PS HAPPY THANKS GIVING!!

Happy Thanks Giving to you too.

yeah thats a good oil. I used that too. Your bike has no miles when you bought it-if its genune. If the bike was sitting around for a while not being used, I would put a inline fuel filter in it and check for any rust inside the tank. You might be able to do that by waiting til the fuel is almost empty then shine a torch down the filler hole. The tank can rust up if left sitting with no fuel in it for a long time. With this low a mileage after nearly 3 yrs it may be just a new set of dash guages but from your pic, the bike does  look pretty new.

As for the oil filter. The manual says to change it at the 1st service (300mile) so maybe wait til then. At the first service youll probably find there is a fair bit of gunk on the filter cartridge so I would change it then and do a complete oil change as wel. If you want to check inside the filter now, then just let it cool down over night then remove the cover like I mentioned and have a look. You wont lose much/any oil that way. Best to put a tray under the bike though just in case any oil spills out onto your (by now) clean driveway!!

Cheers   

[jam1232005]

I cleaned out the filter is it like a smallish metal looking filter full of oil? Well i took one out like that and cleaned it out and realized that theres was lots of metal grains around the filer is looks like when u drill something metal amd those shavings come out i cleaned it all out with paper towels and q tips ... And i have a question about the air filter wheres that located? I want to replace it since i seen some one on here said they changed the filter to a uni filter where do i go about buying one ?

[kutlassboyz]

there is a filter on left and right side of engine. during break in u will have metal flakes as prts are wearing down and meshing with each other. clean both filters. ( read your manual) . breather was a smart move. but it is bogging because you have too much oil. also look under air filter box and there is a lil clear bulb. if it had oil in it from BEFORE you put the breather on, empty it out too.