My bike back fires alot

[qwerty243]

i just brought my brothers bike yesterday and i noticed that whenever i rev it it back fires 4 or 5 times is this normal or is there something wrong with the bike????

 

[jacko]

what type of bike is it

 

[qwerty243]

it a 125 chinese bike it was a pretty cheap

 

[sik-pj]

u gOT a pik of it

 

[Robbie]

u gOT a pik of it

How is a picture of the bike going to solve a mechanical fault?

 

[sik-pj]

umm its not!!!! but the guy said wat bike is it and he said china it was cheap and i said have u got a pik of the bike duhhhh

 

[mxmad]

maybe jus jetting probs

 

[qwerty243]

nah i dont have a pik because my sister took the camera somewhere.

 

[qwerty243]

dose anyone have any ideas on how to fix it or can i just leave it how it is

 

[jazle]

hey mate i have had the same problem with my bike it was backfiring heaps and i looked at the inlet manifold (the pipe that goes from the carb to the engine) and the gasket had blowen. Its no problem though go to super cheap or autobarn etc.. and buy some gasket paper (my dad got gasket paper from his work but u should be able to get some from supercheap or autobarn) and just make ur own gasket also use gasket glue to make it stick as well. also upgrage the bolts to allen key bolts because u can get them much tighter and use locktight.

hopes this helps mate good luck

 

[Divy]

as jazle said check the inlet seals maybe the bolts are a little loose if not check the exhaust where it connects to the the engine cause i know that if there loose an the exhaust isnt tight on the engine it can back fire when you declerating

 

[THUMPY125]

i'd say thats probably whats happening thats happened to mine.

 

[Flarry]

Backfiring can be caused by a leaking airfilter, make sure theres no air getting in threw the gap between the rubber and the carby.

I also noticed when my pipe started to fall off it back fired a whole lot more, I don't think back firing does any harm to your bike though...