Today I think we had a couple of small lock ups, but as you continue to push the setup there are areas that can be affected.
"It was not the happiest of days for me", he said.
Vettel powered his Ferrari around the 4.361-kilometre Circuit Gilles Villeneuve in one minute 10.776 seconds.
A defiant Max Verstappen says he is so exhausted of ongoing questions about his crash-filled campaign that he is going to "headbutt" someone if he is probed on it for much longer. That could prove beneficial if they can find clear air after a pit stop on lap 15 as Friday's data suggested the Red Bull had a 0.4s advantage per lap in race trim over Ferrari. "It was especially nice on my last lap to see all the Canadian flags waving to me".
Horner revealed the team opted to start the race on the Hypersoft Pirelli tyre, thanks to advancing into the top ten shootout using that tyre, rather than the Ultrasoft that both Ferrari and Mercedes AMG Petronas Motorsport will use, and it will be interesting to see how this gamble plays out on race day.
His engine was six races old but Hamilton would have expected better. He has a 14-point lead over Vettel and a 38-point edge on Ricciardo.
And Hamilton, who will now have to race with the same engine he has used in the opening six races, admitted: "If the others are bringing upgrades and have got fresh engines, particularly how close we are, we won't be in position to fight for the victory".
The race continued in its holding pattern, with the leading Vettel, second-placed Valtteri Bottas and Raikkonen in third preserving their tires to guarantee a one-stop strategy.
An opening-lap collision saw Brendon Hartley and home favourite Lance Stroll take their leave nearly immediately, while Fernando Alonso's 300th grand prix was not an occasion to celebrate as he, too, retired early. We knew that in Q3 and in general throughout the whole year with the vehicle, we're just lacking power.
Ricciardo, whose contract with Red Bull is up after the season, playfully refused to confirm or deny that he has been contacted by Ferrari or Mercedes.
"Yesterday the vehicle balance was great into Turn Ten", he continued, "and usually the last sector is my strongest at this track, but I was just struggling with massive bumps into Turn Ten".
The German started from pole position and never trailed on Sunday as he posted his third win in seven Formula One races this year and the 50th of his career.
The second Red Bull of Daniel Ricciardo claimed fourth place, taking advantage of difficulties for Hamilton early in the race to jump the Mercedes during the pitstops.