Loud bang on start up.
 

I think i read a thread about this before but cant seem to search it.

Firstly im pretty sure my carbs need balancing as the bike misfires ever so slightly (mainly when warm).

when i started it up from cold the other day there was a massive bang that frightened the life out of me! just wondering if this was due to the carbs being out of balance or it was something else...

Cheers

Re: Loud bang on start up...
 

Haha! Don't worry about the loud bang, I've had a few - its just some petrol vapour igniting in the exhaust and not in the engine - perhaps some unburnt fuel made it through to the exhaust or something when you turned it off the time before the bang.

A carb balance will help with the miss-fires when the bike is running; i assume its due to being ever so slightly "rich". DO you have an aftermarket loud exhaust fitted? they can induce a bit of popping and banging :D

Re: Loud bang on start up...
 

no its a standard exhaust. i thought i had been shot when it banged! haha very loud in the garage!

i think i may have heard it 'pop' while riding yesterday too...

im going to get her serviced at the weekend i think, keep meaning to do it myself but never find the time!

Re: Loud bang on start up...
 

i meant to say....would something to do with the choke plungers / cable cause it run slightly rich?

The choke doesnt feel loose or anything when i operate the lever for it...but im not sure if it woud feel different?!

Re: Loud bang on start up...
 

How many miles since it was last serviced? You might need a new air filter (if the current one is clogged up, then it'll richen up the fuel/air mix i think?) and maybe you need new spark plugs too. Dont worry tooooo much, its not a big problem as long as you get it looked at now :D

Re: Loud bang on start up...
 

its probably been a couple of thousand miles, just over...

a full service would sort her out then i guess!

Re: Loud bang on start up...
 

?I pride myself in my banging :D



...nothing to worry about

Re: Loud bang on start up...
 

haha

cheers guys!

Re: Loud bang on start up...
 

Yeah don't worry had this happen a few times too. Makes me jump out of my skin!

Re: Loud bang on start up...
 

has the same affect on frale old women and dogs. :smt040