Backfire Through the Airbox ?

[Chillbro20]

Afternoon Gents,


I have a question regarding my 2003 Gen1 Fazer (1000), Not every time but maybe once every 5-7 days on start up from cold, with a little choke I get a backfire from what I think is the airbox? its not from the exhaust.


Not sure why this is happening, or where to start with resolving it, as its only started doing this over the last 4-5 weeks.


Is this causing damage to the bike which means it needs a mechanic to look at ASAP, or do I have time to look at it myself? as this is about the 5th time its happened.


The Bike is just over 41,000 on the clocks and I had a massive service done about 2,000 miles ago.


Any guidance would be appreciated.


Cheers,
Mark.

[unfazed]

Usually slightly loose the plug leads on the plug caps from vibration as they are screwed on to the leads. Unscrew the caps and trim about 10mm off the leads and screw them back on again. More common on the 600 than the 1000.