Xr4 backfiring probs

k_bomb · Posted: Fri Aug 27, 2010 4:15 am Post subject: Xr4 backfiring probs

Have this prob after i just took out my bike from overhaul.n carb changed.doubt it has to be my carb jettings but everytime when close throttle there is a lot of clapping sound from the end can.can anyone explain?

ajaedkoesla · Posted: Fri Aug 27, 2010 4:40 am Post subject: Re: Xr4 backfiring probs

im xperiencing crazy clappings too..!! isit cos of removed diffuser?

funtime · Posted: Fri Aug 27, 2010 5:07 am Post subject: Re: Xr4 backfiring probs

Air leak at all or one of the exhaust connections

k_bomb · Posted: Fri Aug 27, 2010 6:57 am Post subject: Re: Xr4 backfiring probs

Oic,but seems ok to me..lemme hv a closer look..

funtime · Posted: Fri Aug 27, 2010 9:12 am Post subject: Re: Xr4 backfiring probs

Seal the joints with exhaust joint compound or high temp silicone sealant

crackHEAD · Posted: Fri Aug 27, 2010 10:41 am Post subject: Re: Xr4 backfiring probs

if u removed ur diffuser,there will be backfiring ..so its normal bro.

ajaedkoesla · Posted: Fri Aug 27, 2010 12:09 pm Post subject: Re: Xr4 backfiring probs

mmkay.. tanx man! but i tink im gonna check out my carb jetting as well jus to make sure all is fine..

vqz_racing · SR Rider Joined: 09-Jun-2006 Posts: 88

try replacing the black rubber thingy connecting your air filter and carb Wink

ajaedkoesla · Posted: Tue Aug 31, 2010 5:40 pm Post subject: Re: Xr4 backfiring probs

got it done jus now.. my carb was missing an oil seal. now its all nice n goooood!