The problem was only solved after a second stop, when the mechanics changed a blocked fuel filter. Moss and Walker would finish second, four laps down on their winning teammates, Rolt and Duncan Hamilton. This would be the closest Walker would ever get to a second victory at Le Mans. Walker was paired again with Moss for the Goodwood Nine-Hour and they led comfortably for the first eight hours, until the car retired. Next up was the RAC Tourist Trophy, where Walker would break the lap record, but again hit mechanic troubles and Moss managed to bring the car home in third. Although he remained with Jaguar for 1954, the season wasn't as successful, despite teaming with Moss for Le Mans in a Jaguar D-Type, when they retired in the 12th hour with brake problems. At the end of the season, England asked Walker to make himself available for pre-season testing, ahead of the 1955 season. Walker failed to respond and joined Aston Martin. This proved not to be a good move, as Jaguar's great hat-trick of Le Mans victories was about to begin. Some consolation to Walker, was his fine victory in the Goodwood Nine-hour, a race in which shared an Aston Martin DB3S with Dennis Poore. He largely retired from racing after crashing a DB3S at Le Mans in 1956. He made a mistake in the 16th hour of the race, whilst running strongly. He suffered what would basically turn into a career-ending accident. The car skidded on the wet track near the Dunlop Bridge and hit the wall – ultimately sliding upside down on the track. Walker did test and race again in 1957. In the spring, he tested for Rob Walker Racing Team, in their Connaught Type B at Goodwood, and subsequently drove the car in a one-off race, the Gran Premio di Siracusa the following season. He was classified in eighth place despite spinning and stalling the car late on. After he retired from the sport, Walker took up rabbit and chinchilla farming with Lady Ripley for a while, and even designed a type of cattle grid, but both ventures came to nothing. Walker died on 1 March 1984, after suffering from dementia and pneumonia. He is remembered today by his peers like Moss, who describes him as one of life's "great guys".