Time to Get Rid of the Banging Clutch Again
Recently, I noticed that the engine was running a bit rough and lumpy. The banging clutch has also returned. Suspecting that the throttle bodies were out of sync again, I decided to synchronise them again.
On a nice sunny Sunday morning, I rode over to my dad’s place and got to work. Since I was going to do it, I decided to do it right.
With the tank propped and the airbox off, I adjusted the Secondary Throttle Position Sensor (STPS) using the multimeter and torx screw driver. It was off by a bit and I had to turn it all the way counter clockwise to get it to the 0.5 ohm mark.
Next, I connected up my Carbtune Pro to the holes at the throttle bodies and fired up the engine. I blipped the throttle a few times and then let the engine settle down. Once glance told me that number 4 throttle body was out again. Out came the screw driver and I started adjusting throttle bodies 3 and 4. I had to do minor adjustments to 1 and 2 and 2 and 3 as well. Lastly I adjusted the idling speed to roughly just off the 1,000 rpm mark on the meter.
With the engine off, the last thing to do was to check the Throttle Position Sensor (TPS). To do this, I had to pick out the a dangling cable at the left side of the rear seat fairing. I found a short piece of wire and shorted the 2 ends (you can also fashion a switch or buy the Suzuki Dealer Mode Switch and connect it to this connector). After switching on the bike, the LCD meter showed that the TPS was adjusted correctly, so I did not touch that
Being someone who has a high probability of screwing repair jobs up, I took my time slowly and the whole process took about an hour or so.
With all that done, the engine was purring like a sweet kitty with no more banging clutch and a soft rustling of the cam chain. Beautiful.
I am glad that I bough the Carbtune Pro. Though it cost quite a bit a money, but like all quality tools, it was money well spent. I have used it 3 times and considering the money I have to fork out for the throttle body synchronizations at the workshops, I have already got my money back. The same goes for my Proto tools. I have used my spanners so many times that the money had been recovered years ago.