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Hello!

Thanks for the response 8 Ball; it's only a twin, and both pipes passed the water test (luckily!).

I dragged my ex-mechanic boss outside to have a listen, and he noticed that my idle...

That's great information, thanks.

I'll give the exhaust a good look over after work then, and the spark plugs.

As for the inlet leak I'll take a look this weekend if the weather allows! Will it...

Thanks for replying Jon. It's definitely not a rattling, so I can rule out the camchain/camshaft noise I guess.

I don't know much about bikes/bike mechanics atm; by headers do you mean the parts...

Hey all,

Just recently the following's started happening to my GS500; when the bike warms up and hits exactly 1500 revs it makes a loud popping/knocking noise and the revs drop briefly, before...