backfire 1100 gs 2000

[Murray]

had new valves ,one side. new fuel distribution unit. does it after a bit of a thrash when easing of throtle. bmw have had it in 3 times with no joy. suggestions please.

 

[littleredrooster]

My 1150 backfires like a gatling gun sometimes when rolling off the throttle. Seems to be a thing with big twins, 'cos my previous Firestorm did it also.

 

[MikeO]

My Adv backfires on the over-run (typically in the 5k RPM range) since I replaced the cat with a Y piece. I'm pretty sure it's as a result of a poor seal between the can & the Y piece.

I'd be concerned if the bike backfired with standard pipes, cans, cat etc - none of the boxers I've owned or ridden have done that, so I'd query the idea of it being a trait of large twins...

Air leaks in the exhaust system are a classic reason or backfiring. I'm assuming, therefore, that your dealer has checked for this. Perhaps this is a foolish assumption

MikeO

 

[Greg Masters]

Before I sold it, my 1999 R1100GS always backfired on overrun with a trailing throttle. It did this consistently from new with no mods like exhaust etc.

Nothing to worry about.

Greg

 

[martin davy]

Backfiring is a built in trait to stop the exhaust from coking up! Works a treat

 

[Isaac Hunt]

fritens the crapp out of penshuners with poodles in town. dont want to get it fixed

 

[shuck raider]

They all do that, Sir...........

 

[Keith Chapman]

They all do that, Sir

Mine does not backfire or surge... have I got a Friday afternoon one.. should I go back and complain until my dealer can fix it

 

[Paul Wakefield]

I need to get mine to stop backfiring post Y piece conversion (probably the seal). I ride a lot of rural roads hence there are nags about. Apart from what it might do to the rider, I don't want half a ton of unnerved horseflesh anywhere near me or my bike.

Much more fun in town though!

Paul

 

[retroman]

BACKFIRES ROCK !!!

 

[fredkat41]

Farting!!1

I have an 1100GS and it "farts" on the overun, even scares the crap out of me sometimes!!!

I thought it was because I adjusted the TPS to cure the snatching, but hey it's a bonus!!!

Fred the farter