Won't start, cranks but not even a cough.

[aln101st]

2011 model, and haven't been fiddling with anything on the bike recently.

There's so many posts on hard starting, but most end up with the bike starting.
I've experienced it too. Usually after lying for a couple of weeks.
This time it won't start. Not even a cough.
Hadn't started after 10secs, so went to WOT.
Must have cranked it for over 5 minutes. With breaks so not to cook the starter.
Went for a coffee....
Cranked it for another 5 minutes, this time with a big battery and jump leads.
Gave up.
By the way, I couldn't really smell any petrol at all. Could hear the pump running though. Could I be getting no fuel, as opposed to too much?

Read a post which suggested pulling the EFI fuse to clear possible flood.
Tried this today after a few cranks.
Just keeps turning over..........

The fuel is fairly fresh. At least half the tank got filled just two weeks ago after last run.

Is there any merit in trying a bump start?
Reluctant to try this as I live on a noticeable hill, so will need volunteers if it didn't start.

Ideas???
Alan

 

[azb]

If you have a can of starting fluid, you can squirt some on the intake and crank it. If it turns over at all, then it's probably a fuel delivery problem. Check connections and fuses for fuel pump, check for voltage at fuel pump, and if you can check for fuel pressure, try that.

If you're getting voltage, but poor or no pressure, it's the pump.

 

[Checkswrecks]

Fuel, spark, and air. Trying to start with some ether first is a good idea.

 

[aln101st]

If a hardstart, or no start, has been experienced, will leaving it for a while help? Or does the situation persist till it eventually starts?

Fuel, spark, and air... Yes. On a traditional bike I'd have whipped a plug out for a look, but I haven't found this engine yet. Bah, Humbug!
Can you lift the tank up enough to get at the plugs without stretching pipes and cables?
Alan

 

[Squibb]

By all means try some 'Easy Start' ................. https://www.amazon.co.uk/Holts-Bradex-Easy-Start-300ml/dp/B000X2CR4W

If unsuccessful & you last ride was a wet one, I would be tempted to lift the tank & check the coil sticks/plugs/sparks.

 

[Don T]

Can you lift the tank up enough to get at the plugs without stretching pipes and cables?
Alan

Yes. Just unhook the overflow tubes from the clip located on the front left side of the engine.

 

[aln101st]

HaHa. I live in Argyll. Most rides are wet.
I always wash the bike before putting it in the garage, so all rides are effectively wet anyway.
I leave the engine running while washing to get a heads-up on any HT leaks.
Always been fine.
rgds, Alan

 

[aln101st]

Welllll....
I turned it on but didn't crank it, then bumped it down my drive.
It fired instantly the engine turned over on closed throttle, but took another ten meters before it ran.
This would normally indicate that the cranking current, or lack of it, was the difference. But I had tried it with jump leads of a large battery so that theory doesn't seem as valid.
What I do wonder is whether the injectors only inject when a run signal is present or the engine is being cranked.
Bumping it might not cause a fuel injection at all and allow the cylinders to clear???
Alan

 

[Cycledude]

Have you had the wiring recall done .?

 

[aln101st]

Have you had the wiring recall done .?

Hmmm. Enlighten me!

 

[Boris]

Hmmm. Enlighten me!

There were a couple of recalls, one for the headlight harness and another to do with some wiring elsewhere, off the main loom I believe. The latter wasn’t a recall for the UK.

I’m just trying to find the thread for proper detail, will stick a link here once I find it. Link below.

https://www.yamahasupertenere.com/index.php?threads/gen-1-new-recall.25231/

I just checked the .Gov website and there’s still no UK recall on the latter issue.

 

[aln101st]

Looks like my bike predates this recall by quite a bit.
Interesting though. I'll have a look at the wiring when I find the engine!
Alan

 

[aln101st]

19,000

 

[aln101st]

Try some fuel injector cleaner. Can’t hurt

Good suggestion. Tank treated.
Alan

 

[Tenman]

. I checked mine with 52k miles on it. The pattern was off. This worked. They are easy to do

 

[Flat lander]

My used 15 es model had trouble starting when the temperature dropped below 50 degrees. It would start then die. On the second try it would start and stay running. I didn't think that was acceptable for a fuel injected bike.
I started using Marvel Mystery oil in my fuel stops and my problem was solved.

 

[MIKE R]

I had to have my petrol filer removed and cleaned after suffering from a very bad misfire whilst touring Norway (caused by dirty fuel blocking the petrol filter).

On the mechanics recommendation I poor a bottle of this into a full tank of fuel annually as a preventive.


.

No issues since

Mike

 

[Boris]

I had to have my petrol filer removed and cleaned after suffering from a very bad misfire whilst touring Norway (caused by dirty fuel blocking the petrol filter).



No issues since

Mike

Hi Mike

After how many miles was the filter in such a state? Was this using just petrol readily available in Western Europe?

 

[Cycledude]

also A Marvel Mystery oil user but in cold weather my 2018 likes to stop after the first start, if I keep holding the start button a little longer it keeps running fine , I suspect it might be set slightly to lean, when it’s warmer it starts and keeps running just fine. The cold also seems to affect my jerky throttle, in cold weather it doesn’t jerk at all.

 

[MIKE R]

Hi Mike

After how many miles was the filter in such a state? Was this using just petrol readily available in Western Europe?

I've had the same tank on 3 bikes (long story!) so the mileage was c50k without the fuel filter being cleaned.

All the miles have been in the UK, Western Europe and Scandinavia

I now have my filter cleaned at every 6k service

Mike