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Honda Cbr 600 Motorcycle

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j0nb0y | 13:44 Sun 19th Feb 2017 | Motoring
4 Answers
I have a Honda CBR 600 motorcycle, it has been stood in the garage over winter, I went to start it up today, it is back firing (rather loudly) and I can hear a popping sound coming from, I assume, the spark plug area???

I didnt actually get the bike running, because the back firing was scaring me half to death. Any ideas what the problem could be?

TIA

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Sticking valve, probably. Try using an upper cylinder lubricant, (Redex) or similar, directly into plug hole. It will be smoky at first !
I'm surprised there aren't more answers from our regulars !

I would just add that it may help to pour a small amount into the cyclinder via the plug hole and leave it overnight before trying the engine. Let us know how you get on.

D
just let it run through the back firing. In future start it every week
Isn't backfiring an air leak? Did you get it sorted.

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