Red Bull driver Daniel Ricciardo vented his frustration after the Formula One™ team endured another difficult session at the Canadian Grand Prix™.

Ricciardo, 25, qualified ninth fastest in Montreal on Saturday, as reigning F1™ champion Lewis Hamilton of Mercedes claimed pole.

The charismatic Australian has struggled to replicate the performances of last year, which saw him announce himself in remarkable fashion with three race victories in his rookie season with Red Bull.

Ricciardo is yet to register a podium finish, with fifth place in Monaco a fortnight ago the highlight of 2015.

"In Q1 and Q2 we did a build-up lap and then a push, but it felt like it was taking too much out of the tyre, so we said by Q3 it should be OK for the first lap," said Ricciardo.

"But it was nowhere, I couldn't get it, and it just wasn't ready.

"We just can't seem to get a sweet spot, which brings out the frustrations.

"The last few races we've had updates, but to be honest they haven't really done anything for us.

"I don't think we really know what we need right now or where to find it.

"We are trying but we are not getting much in return.

"We probably need to take a step back and look somewhere else or try and see if there is something fundamental we are missing.

"Obviously on the power side we know where that is, but on the chassis side there's something there which we can't grab onto which we had last year."