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Backfire on start up
Posted: Tue Jun 16, 2015 10:31 pm
by thackers
Hi, I'm looking for a bit of wisdom on a problem I've just started to have. When starting up from cold only I get a backfire crack sound the bike then runs normally. I use the choke to start then let it off once the engine is running as I always have. Does anyone have an answer to this. Thanks
Re: Backfire on start up
Posted: Wed Jun 17, 2015 10:26 am
by Architecten
Electrical. LT coil starting to fail...?
Re: Backfire on start up
Posted: Wed Jun 17, 2015 4:52 pm
by Timbo
Exhaust leak?
Re: Backfire on start up
Posted: Thu Jun 18, 2015 2:57 am
by LI225Canada
The only time I have had a backfire is when Iv had a needle that was too lean, so Im thinking maybe the needle is getting stuck at startup till it warms up??
Re: Backfire on start up
Posted: Thu Jun 18, 2015 4:56 pm
by thackers
Thanks for help, Exhaust seems ok, the ignition is a Varitronic so I'm hoping it's not that. I'll check the needle.
Re: Backfire on start up
Posted: Thu Jun 18, 2015 11:29 pm
by LI225Canada
Also inspect that all the gaskets, seals, rubbers, nuts, bolts, clamps and screws on the carb and intake are good and tight.