Question about Suzuki RM-Z 250 Motorcycles

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My Suzuki LTF250 quad bike is not idling smoothty and is also backfiring. I want to remove and clean the carb but this looks like a formiddable task as I cannot get to any of the screws that need loosening.

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You can do it just need patience and time, if your motorcycle has more than one carburetor be sure not to interchange the parts because there are jets not in the same number. thanks!

Posted on Apr 26, 2011

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1 Answer

Is a 2000 Suzuki LTF250 quad runner Ina 4 stroke or 2 stroke


Joe, 2000 Suzuki LTF 250 is 4 stroke. Check the attached links,instruction and guides, Good luck
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Jul 04, 2013 | Motorcycles

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Carb on big bear 350 quad was plugged from sitting ,took apart and cleaned ,bike won,t idle unless choke is out a bit ,but if you push choke in and keep reved up will run ,also backfires when letting off...


it is a garantee that the main jet is stoped up with that grayish dried gas minerals..this not in the main jet valve you can remove,but actually in the bore on the carb body... you can try to use torch tip cleaner to open the hole ...hope you the best ....it is a very hard substance...someone tried starting the bike after being set up for a while without removing carb and cleaning first.....sincerely;R.B.V.

May 18, 2013 | Motorcycles

1 Answer

My suzuki back firing on me and also is cutting out


Has the bike been sitting? It sounds like a carb issue. Most times they backfire because they are running too lean.Also,check for vacuum leaks around the intake using brake clean while the bike is running.If the idling characteristics change when you spray it,then you know you have an intake leak.If the bike has been sitting for a while,then the carbs may need to come off,and be cleaned and synched.

Sep 25, 2012 | 1996 Suzuki VS 800 Intruder

1 Answer

I had my bike in for service...they synchronized the carbs...and now i have back firing problems....i do not have stock pipes...i have cobra long shots on this bike...what is the issue...help


synchronizing the carbs wont cause it to backfire. all this does is adjust all the carb butterflys to open together so all cylnders work the same, and has the biggest effect at idle.
Backfire can be an air leak on the inlets or exhausts gaskets, too lean a mixture or maybe the plugs\screws that were removed to sync the carbs are not sealing.
It can also be a low voltage problem, but this shouldnt have just started by a service.
Have you asked them where it was serviced?

Jun 15, 2011 | 2003 Suzuki VZ 800 Marauder

2 Answers

My bike will idel but won t rev. just cuts off


Starving for fuel.
Make sure carbs are getting fuel.
Make sure fuel filters are clean,
make sure fuel pump is working.

If carbs are getting fuel but wont rev, you need to clean your carbs because your jets are clogged

Dec 03, 2010 | 2000 Suzuki GSX 750

1 Answer

I cleaned the carbs and after putting them back on the bike idles at 7000-8000 rpms and wont go lower, it will rev higher and just go back to 7k-8k


Must be throttle sticking .
Check , Cable at carb end is in holder ,
Cable is not kinked,
Cable at handlebar end is properly in slide,
Pistons in carbs are free to slide
There are no obstructions in carbs.
Try, Disconnecting cables from carbs ( if your bike idles , its the cables)
Removing air intakes and looking down the carbs with a mirror and torch ( slides should be seating almost closed)

Mar 30, 2010 | 2000 Suzuki GSX 600 F (Katana)

1 Answer

Ltz 250 wont idle needs full choke to run.cleaned carb all jets new diaphrams. cleaned air filter and all hoses. backfires and hesitates half and full throttle.


hi,sounds to me like the air fuel ratio is all up the ***,locate the air/fuel screw on the carb(normally on the side)screw the screw right in untill it stops,then back the screw out 1.5 turns,this should get the bike to run without the choke,once you have the bike running simply turn the screw in or out untill the bike settles into a nice steady idle,should be good to go,hope this helps...cheers

Mar 22, 2010 | 2005 Suzuki 250 SB

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