S10 won't start

Sierra1

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. . . . sound like the battery is half dead every time I start it.
That's because you have a 'Wing. My neighbor, EVERY TIME I START MY BIKE, tells me I need a new battery. It's because his 'Wing has a starter that spins very fast. I just replaced my 6-year-old, twice killed, battery that still worked. The new, 14S, battery sounds the same as the old one.
 

semmyroundel

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Well you can blame the heated grips, or the headlights, or some accessory, or the throttle position, or anything other possible excuse. I blame Yamaha for building such a crappy starting system. After nearly 100,000 miles on Tenere’s I Recently installed a lithium battery in mine and it finally doesn’t sound like the battery is half dead every time I start it.
That's interesting. I have a Harley 1200 sportster that I recently installed a lithium battery in and actually not happy with it.
It seems to need 'waking up' in that it won't turn over the engine on first depression of the start button, if I stop the cranking, switch off, and restart, then it turns over quickly.
I find that a bit unnerving, so I was reticent to move to lithium on the S10, maybe because the Harley is a Vtwin? Needless to say, the 'actual' condition of the AGM battery is palpable in what it will and won't do, whereas I don't know with the lithium.
I always use fully synthetic oil in an attempt to reduce friction on cold starts, you may say it has no effect over mineral-just my two cents worth.

With regard to the heated grips-fair point, I don't know how that happened, but the lights-I can't turn those off to start the S10, how do you do that?
 

semmyroundel

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I wouldn't be so quick to blame the battery. You mentioned the headlight being on, along and the grips heaters. That's a lot of extra juice being used on a bike that needs most of its available just to start. Whenever my headlight comes on without the engine, I turn the ignition off, and then back on to restart the sequence. Even on my previous "no electronics" bikes. But it is hard to tell when the grips are heating up.
Sorry, I didn't explain myself properly.
When I mentioned battery issue, I didn't mean the battery was faulty, only that it had become drained because I didn't have the optimiser plugged into it whilst it was in the garage. The drain from grips, lights being on etc just exacerbated the problem.
 

Cycledude

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Tenere headlights don’t turn on until the engine fires at least once, but yes if it fires and doesn’t actually start the headlights being on will definitely make starting more difficult. When that happens to me I turn the key to off for a couple seconds and then start over with no headlights turned on.
This is the battery I purchased along with the special charger for Lithium batteries, wasn’t cheap but so far it’s been making me smile every time I start the Tenere because it doesn’t sound like the battery is half dead anymore.
 

Cycledude

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@Cycledude, my lights are on the minute I turn on the ignition to start the bike, fire or no fire.
The stock headlights on your Tenere come on as soon as you turn the key to the on position before the bike starts running ? Maybe it works different un the UK but that’s definitely not the way it works here in the USA . Here in the USA the Tenere headlights don’t turn on until after the bike is running.

Tenere headlights not turning on is one of those things that has caused quite a bit of confusion, some folks have thought the headlights had both burned out and actually went through the trouble to replace the perfectly good bulbs.
 
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bimota

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i,m in the UK , the UK bikes if you turn ignition on you have no headlight on, soon as you press the starter and it fires up the headlights come on

they do not come on unless the bike starter is pressed and the bike fires up

rob
 
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Boris

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The stock headlights on your Tenere come on as soon as you turn the key to the on position before the bike starts running ? Maybe it works different un the UK but that’s definitely not the way it works here in the USA . Here in the USA the Tenere headlights don’t turn on until after the bike is running.
I’m in the UK. The headlights do not come on with the ignition being switched on. They only come on once the engine is running.
 

JamesGang

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I have also experienced the no-start issue with my 2018 non-es on a couple of occasions. By simply shutting down the bike completely and starting again while holding the throttle wide open it has started every time. Holding WOT tells the computer that the engine is flooded and it cuts the fuel flow. This also works on most vehicles with electronic fuel injection.
 

semmyroundel

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Thanks guys, I'll check. As I'm not normally in front of the bike when I start it, it's difficult to tell, but certainly looks like the lights are on when I've started it before, could be my mistake though, or alternatively, there's something wrong with my bike alone.
 

bimota

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Thanks guys, I'll check. As I'm not normally in front of the bike when I start it, it's difficult to tell, but certainly looks like the lights are on when I've started it before, could be my mistake though, or alternatively, there's something wrong with my bike alone.
yes,
if you turn the ignition on don,t fire it up you should not have main lights on, if you do somethings wrong

rob
 
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Sierra1

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well, my garage is so dark, it looked like the main lights were on when the parking lights had come on, and as you all correctly said the mainms only come on when it fires.
They're easy enough to not notice. I'll probably not notice when mine burn out because I always start when I'm outside the garage.
 

Meterpig

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May 28, 2022
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I used to think that this whole method of starting method was witchcraft. Now that I have gone through it and I have replaced the timing tensioner along with ignition coils and your spark plugs, and I have actually seen the throttle bodies in action during start up. I understand why the method is out there.
 

sky4

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Northern Colorado
i'd check your ignition switch. as far as i can tell the power for the coils runs through both the ignition switch and the kill switch. My bike was cutting out occasionally and difficult to start. like it was losing spark. took igntion switch apart and cleaned the contacts, has been good since.

I think this is also why a lot of folks are religious about using the kill switch to shut the bike off, apparently those contacts are better suited to switching off the high load of the coils.
 

Muybig

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Aug 16, 2021
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Montreal
I've been searching (the hard to start posts) since I got back from my recent trip. 6221 Km in 12 days 8 of them with rain from light to thunderstorms, I would cover the bike ever night to protect it from any further rain. Starting on day 11 the bike would not start on the first press of the start button, during the trip would have to start the bike 3-4 times per day for gas/lunch and I ran my heated grips on a couple of days as well.

This past Sunday the bike had to be cranked 5-6 times until it eventually started took a nice 300KM ride with no issues I will be going to see my mechanic on Friday to get his opinion. I see a lot of riders installing Lithium batteries and found these 2 YouTube videos which has blurred the waters for me.

I will decide on how to proceed and what to buy/or do after this weekend and having spoken to my mechanic FYI prior to my trip this issue was not on my radar bike would jump to a start upon pressing the start button.


 

Cycledude

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This is the battery I ordered back in June , 387 cold cranking amps, wow what a major improvement, my Tenere finally doesn’t sound like the battery is half dead every time I start it.
 

WJBertrand

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This is the battery I ordered back in June , 387 cold cranking amps, wow what a major improvement, my Tenere finally doesn’t sound like the battery is half dead every time I start it.
I’ve been running that battery for 4+ years. So far so good.


Sent from my iPhone using Tapatalk Pro
 
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