texastopper Posted March 4, 2007 Share Posted March 4, 2007 when coming off 3/4-full throttle engine backfires thru exhaust. any ideas? Link to comment
E30TECH Posted March 4, 2007 Share Posted March 4, 2007 That usually indicates a lean mixture. Is there any possibility that you have a vacuum leak? Link to comment
GordonB Posted March 4, 2007 Share Posted March 4, 2007 Is it a 'BackFire' or is more of a popping? Popping is normal. Link to comment
texastopper Posted March 4, 2007 Author Share Posted March 4, 2007 its not a full fledged ear ringing backfire that sounds like gunfire,but it's louder than a pop. Link to comment
Tony_K Posted March 4, 2007 Share Posted March 4, 2007 More than one in sequence? If so it's popping. Link to comment
T__ Posted March 4, 2007 Share Posted March 4, 2007 when coming off 3/4-full throttle engine backfires thru exhaust. any ideas? Texastopper, you didn't say what type of exhaust system you are running? If an aftermarket type system then you could be experiencing a normal condition.. Just a slight lean out on decel will cause a popping in the muffler/pipe.. If still running a stock exhaust system then you possibly have an air leak into the pipe or muffler at a gasket or joint (check for leaks at pipe joints, O2 fitting, & muffler attachment).. Twisty Link to comment
dcameron Posted March 6, 2007 Share Posted March 6, 2007 I've got a '03 R1150R and removed the can but not the catalytic converter. When I shut down the throttle it'll "cough" a little on compression. Didn't do this with the can on, or didn't hear it. IMHO the can is to catch these extranious noises, probably why it's sometimes called a muffler. Big twins are known to "pop" occasionally. Doesn't affect performance. Link to comment
texastopper Posted March 7, 2007 Author Share Posted March 7, 2007 it has a remus exhuast &a power commander Link to comment
Tony_K Posted March 7, 2007 Share Posted March 7, 2007 and the punch line is....... drum roll please...... it has a remus exhuast &a power commander That's some funny stuff right there. Your exhaust note and resulting burps are perfectly normal! Link to comment
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