Thonk

[wedgie]

A recent observation... a couple of seconds after starting up, I get a fairly loud 'thonk' coming from the rear nearside - as though a metal plate with a dent in it has 'popped'. This is while the Chim's stationary, so it ain't suspension or anything like that
Anyone come across anything similar? Could it be the tank?

[trefor]

Fuel tank pressurising. Usually happens more in hot weather. Check you breather system is working (fuel cap/carbon cannister etc.).

Don't worry - they all do that at some point.

[chris43]

Were u low on fuel?
I've been advised to leave the filler cap slightly loose.

[M@H]

"they all do that sir"

Have a look for your charcoal canister in the front wing and see what sort of state its in.

Cheers
Matt.