I'll give it a crack
Australian Slang. Means the person will try their best.
John: "Jim do you think you could assist me with putting together this wardrobe?"
Jim: "I'll give it a crack!"
Jim: "I'll give it a crack!"
Giving it a crack
‘Giving it a crack’ is Aussie for ‘having a go’, trying something you’re not confident or experienced in. Not sure you’re gonna nail it, but trying anyway
I’ve never restored a vintage caravan in my life and it leaks like a sieve, but I’m giving it a crack