‘There wasn’t enough pressure to work the GSX-R’s injectors’
Suzuki K8 hit by mystery flat spot
When Sam O’Brien at Junction Motorcycles in Tamworth, Staffs, took in a clean, 33,000mile GSX-R1000K8 to sell with ‘running problems’ that the owner had given up on, he was confident he could sort it quickly.
Sam said: “I changed the eight injectors, screwed in new plugs and stick coils and fitted a new fuel pump motor before taking it to Steve Jordan Motorcycles in Great Bookham, Surrey. They flashed the ECU to develop a custom fuel map on their dyno and got it pumping out a very decent 165bhp at the rear wheel, so I soon sold it.”
But three weeks later he took a call from the buyer to say it had a flat spot at 6000rpm. They took it back in and tried to sort it with new plugs, battery, reg/rec and throttle bodies without any joy, so he gave him a full refund and did some further research.
“The O-rings can perish where the pump assembly mounts on the tank, which means there’s a drop in fuel pressure. The bike keeps running, but if you give it large on the throttle there’s not enough pressure to fire all eight injectors, just the top rail of four, so you get the flat spot,” said Sam. But new rings didn’t make any difference, so it was time for a final throw of the dice in the shape of a complete pump assembly for £290 on an auction site. This time the bike ran perfectly!
The pump assembly isn’t a serviceable item, and it was either a partially blocked filter in there or a hairline crack in the body that was causing all the problems. So, anyone want a clean and now sorted Gixxer for £4750?
With new franchises and showrooms, M&P Direct have cemented their position as Wales’ largest multifranchise dealership. Now with a complex in Cardiff, just off Hadfield Road, you can grab a coffee and browse or test one of the 200✚ bikes on site from all of motorcycling’s best-known brands. Along with the likes of BMW, Harley-Davidson and Ducati, KTM are now part of their line-up with the full range of road and off-road models. From KTM’s World Championship winning motocross range to the 1290
Super Duke GT, and everything in between, you’ll find it at M&P. But the story doesn’t end there, as there are deals and finance too.
KTM 1290 Super Duke R Evo
Highly praised by MCN, the thirdgeneration 1290 Super Duke R Evo could be yours for £2500 less at Cardiff KTM with a tag of £15,399 so you can enjoy its incredible handling for less cash.
KTM 1290 Super Adventure S
KTM’s 1290 Super Adventure S takes long-distance comfort to an entirely new level. Its combination of power and torque, along with intelligent features such as Adaptive Cruise Control and semi-active suspension, work in harmony with advanced ergonomics and technology to make this a welcome addition to the touring market.
At M&P, you can save over £2000 on this continent-crossing beast while stocks last with the price now £13,990 compared to the original £15,999.
KTM Super Duke R
One of the best hyper-nakeds around, boasting a menacing combination of high-performance chassis and engine spec, as well as top-shelf rider enhancements and electronics, it’s fun to ride while retaining mountains of attitude. With limited stock, be quick if you want to snap up the Super Duke for £13,999 - saving £2350 off the showroom price of £16,349.
‘Grab a coffee and browse 200✚ bikes’