my X1 backfire alot

[adair89]

i jsut changed to rxz carb and open up my air box, so no air box now.

can feel the different in pickup but everytime backfire at gear 4 engine braking.

how to reduce the backfire?

[alifk69]

mine same problem.. and i didnt mod anything.. all stock..

[Raptor]

i jsut changed to rxz carb and open up my air box, so no air box now.

can feel the different in pickup but everytime backfire at gear 4 engine braking.

how to reduce the backfire?

 

There is more air than fuel going into the engine. The bike is running lean.

You need to upsize the pilot and main jets.

 

Running lean may result in higher temperatures which can cause overheating and at worst.. warped cylinder heads or blown gaskets.

 

Fuel / air mixture needs to be maintained at a proper ratio for the engine to operate efficiently. So the engineers at the factory have calculated what size of carb and what size of jettings to be used to maintain this correct ratio. Even the size of the airbox and its opening is calculated into the formula to match the bore and stroke of the engine.

[Toyota23]

CAn Honda SP do backfire??

[Raptor]

CAn Honda SP do backfire??

 

Any poorly tuned carb or EFI can cause backfiring and overheating.

[adair89]

thanks for the reply, i'll have it look at a shop, cause i diy change with my friend.

[RAKz]

i used to ride a X1, nvr mod b4 but it keep back fire whenever i close throttle. My friend has this problem as well, so X1 is popular with its back fire..

[revospeed]

Encountering same problem with my bike too

[khehBRYAN]

I'm also riding x1. I think it backfire cos of the exhaust. At the front part where it connects to your engine usually the screw will break and this will cause it to backfire. You just go shop burn our the screw and change new one and make sure the front part both screws are tightened i guarantee you wun backfire anymore.

[biting_point]

I'm also riding x1. I think it backfire cos of the exhaust. At the front part where it connects to your engine usually the screw will break and this will cause it to backfire. You just go shop burn our the screw and change new one and make sure the front part both screws are tightened i guarantee you wun backfire anymore.

 

:sian:

 

backfire are caused by lean air/fuel mixture..

[Boon6600]

I used to own a Sparkz110 and the same thing happen to me but after trouble shooting, change this and that, finally it the air value which is near to the engine. Change it and no problem lao. Hope that help.

[alifk69]

Encountering same problem with my bike too

 

eh bro.. i like got see ur bike before.. u stay amk there izzit?

[yancurly8]

Hi Bro..

 

I used to have same problem on Wave125 when i change to Honda NSR carbs and took off my airbox back then.. like the oters say.. bike was very lean and backfire very common..

 

Ask ur mech to regulate ur air/fuel ratio. if it does not improve, at least the backfire wont be so 'loud'.. i realise the backfire easy come if i close throttle fast after over-rev.. try to see if ur bike improve if u go easy abit on ur throttle.. All the best!

[revospeed]

eh bro.. i like got see ur bike before.. u stay amk there izzit?

 

No lah.. Staying Woodlands