Morning all.
I've come to the conclusion my ST1300 hates Monday mornings.
I commute from Brighton (UK) to London and back every day - roughly (53 miles each way), so the bike gets plenty of miles (A9 - 67,500m).
In the past couple of months there seems to be a bit of an issue and it feels like it's every Monday when I start the bike to head off to work.
The scenario goes like this:
Start the bike. Get gloves etc on, usually set off with 1 bar on the temp gauge.
Hit the single lanes out of Brighton towards the 70mph (A23-M23). The bike runs smoothly as it warms up to 3 temp bars.
Hit the fast bit for 30 miles before peeling off to work through the urban riding towards London. This usually involves filtering through stationary traffic queuing on the sliproad off the motorway. I'm in either 1st or second gear and the bike feels a little jerky...a gentle 'pop' from the exhaust.
Then the first red light of the commute and the bike idles fine for a moment and then it seems to want to drop off from 1000+100 rms to something below that. I blip the throttle to keep the revs up and again...dropping...stummbling...but not stalling.
The lights change, I open up the throttle and it hesitates a little and sets off a bit jerkily.
It's like this now for the remainder of the ride in. It's happening too frequently to be bad fuel.
Start the bike in the evening, absolutely fine!
Have a look at the clip on YouTube - https://youtu.be/kkz8Gdaxnqk
It Give you a bit of an idea of the inconsistent idle...
Now, I've done a bit of digging around on this one and here's what I've tried so far to remedy it myself:
1. Used some Wynns injector cleaner - this certainly improved the MPG and fuel reading when it's low, but the stuttering still happens (Mainly on mondays)
2. Tightened up a couple of sparks - the sparks are relatively new NGK Iridiums. I think they're 8's so I may try a new set of 7's)
3. New OEM air filter - fitted last week.
4. Remove airbox disconnect 5 Way and it was pretty clean.
5 New oil/filter/final drive oil every 4000 - (currently 2000m in)
6. Increased idle speed...
I'm now looking for help and suggestions to try.
Q: It's been a couple of years since my Battery change (21,000 per year) - would this have n impact?
Q: Should I change the hoses to the 5 way (they looked ok) and is it a faff to do it?
Q: If it was a fuel pump issue, would I notice it a high speed as well?
Q: If it was the coils, would that cause complete stalling?
Q: Should I start with new sparkplugs...
Other than that, and inventing Prozac for motorbikes, I'm at a loss as to what to try.
I'm getting no error codes flashing....just a grumpy bike when I hit the urban part of my commute on a Monday morning.
Your wisdom and suggestions, as ever, will be extremely welcome.
Thanks
Rob
I've come to the conclusion my ST1300 hates Monday mornings.
I commute from Brighton (UK) to London and back every day - roughly (53 miles each way), so the bike gets plenty of miles (A9 - 67,500m).
In the past couple of months there seems to be a bit of an issue and it feels like it's every Monday when I start the bike to head off to work.
The scenario goes like this:
Start the bike. Get gloves etc on, usually set off with 1 bar on the temp gauge.
Hit the single lanes out of Brighton towards the 70mph (A23-M23). The bike runs smoothly as it warms up to 3 temp bars.
Hit the fast bit for 30 miles before peeling off to work through the urban riding towards London. This usually involves filtering through stationary traffic queuing on the sliproad off the motorway. I'm in either 1st or second gear and the bike feels a little jerky...a gentle 'pop' from the exhaust.
Then the first red light of the commute and the bike idles fine for a moment and then it seems to want to drop off from 1000+100 rms to something below that. I blip the throttle to keep the revs up and again...dropping...stummbling...but not stalling.
The lights change, I open up the throttle and it hesitates a little and sets off a bit jerkily.
It's like this now for the remainder of the ride in. It's happening too frequently to be bad fuel.
Start the bike in the evening, absolutely fine!
Have a look at the clip on YouTube - https://youtu.be/kkz8Gdaxnqk
It Give you a bit of an idea of the inconsistent idle...
Now, I've done a bit of digging around on this one and here's what I've tried so far to remedy it myself:
1. Used some Wynns injector cleaner - this certainly improved the MPG and fuel reading when it's low, but the stuttering still happens (Mainly on mondays)
2. Tightened up a couple of sparks - the sparks are relatively new NGK Iridiums. I think they're 8's so I may try a new set of 7's)
3. New OEM air filter - fitted last week.
4. Remove airbox disconnect 5 Way and it was pretty clean.
5 New oil/filter/final drive oil every 4000 - (currently 2000m in)
6. Increased idle speed...
I'm now looking for help and suggestions to try.
Q: It's been a couple of years since my Battery change (21,000 per year) - would this have n impact?
Q: Should I change the hoses to the 5 way (they looked ok) and is it a faff to do it?
Q: If it was a fuel pump issue, would I notice it a high speed as well?
Q: If it was the coils, would that cause complete stalling?
Q: Should I start with new sparkplugs...
Other than that, and inventing Prozac for motorbikes, I'm at a loss as to what to try.
I'm getting no error codes flashing....just a grumpy bike when I hit the urban part of my commute on a Monday morning.
Your wisdom and suggestions, as ever, will be extremely welcome.
Thanks
Rob
