Please edjumicate me on side stand cut outs

[TaffyTDM]

I seek the combined wisdom of the BCF.
Last couple of days ive had an intermittent issue where the bike wont start on the button, no solenoid click, nothing. However it will push start no issues. I dont suspect battery problems. Ride it round for a bit and then it will start ok again. Doesnt seem to ever happen when cold, only when pulling up then returning to the bike within half hour or so.

Im wondering if the side stand switch is the cause, but would this stop it starting on the push too? I also dont hear the fuel pump prime at all when its about to play the bastard on me.

Before i send it for an expensive fault find, which probably wont replicate for the garage, other than the sub frame being twisted, any other suggestions?

Tdm 850 4tx

Ta mucly[/list]

[weasley]

You may not suspect battery problems but still worth ruling them out. Check the terminals are tight and the voltage is good.
____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[mentalboy]

I'd be erring towards the start button, if you can open up it's casing then check the contacts and try spraying some electrical contact cleaner/lube in there, same with the key lock - don't use WD-40 for either.

Get liberal with the same contact spray in the sidestand's contact button manually working it in and out - engine off!! - and see what those tricks do for it.

My money would still be the on the starter button, especially if you've had plenty of skanky winter weather riding this year.
____________________
Make mine a Corona.

[raak]

side stand plungers can get crud in, cheeky squirt with wd40 on the nozzle might just clear it up.

if not the side stand maybe the loom, has a chafed wire in it.
could be the push is what makes the wires touch again rather then the static push of the starter.

had the devil of a job tracking down an electrical gremlin like that.
bike would run fine the cut out.

be dead for a bit then start up fine for a day or so...until..

mine was a few strands still intact under the tank...took ages to find..

good luck.
____________________
Previous bikes: Suzuki GT250A / Yamaha DT125 / NTV Honda 650 // currently Suzuki RF900

[jaffa90]

If you suspect the side stand switch just bypass it on a temp basis.

[jeffyjeff]

[TaffyTDM]

[TaffyTDM]

Thanks for all the suggestions thus far it aint over yet

[Weisse Schlange]

Side stand switch will kill the bike full stop. Including on the starter.

Bypass it to test.
____________________
Hing Oan

[Easy-X]

Looking at the wiring diagram it looks a similar setup to most modern Yamahas: to kill the engine the side-stand would need to be down and the gear engaged. So unless you also have problems with the neutral light coming on I doubt if it's that.

I'd be leaning more towards the kill switch, ignition switch and corrosion around the ignition fuse.
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Polarbear]

As said above, on most bikes side stand switch only kills engine if bike is in gear (to allow it to be started in the side stand) so if it was malfunctioning you would expect it either to stop the bike whenever you put it in gear including bump starting.

I'd be looking at (spraying ) the switch gear.
____________________
Triumph Trophy Launch Edition

[pepperami]

I’ve had a couple of bikes with side stand switches.
They’ve ALL caused me issues, including leaving me stranded on the side of the road for a few hours, until I worked out what the issue was .
Each one, I’ve bypassed them and the intermittent stopping and not starting has gone away.

I fugking hate side stand switches! They ALWAYS get dirty & damp & corroded

I’ll bet many a biker has gone through kill switches, ignition barrels, batteries, etc , only to discover a stupid little switch connected to the side stand is the problem.
These days, it’s the first place I’d look if I have a problem with the bike not starting or suddenly the engine dying .
____________________
I am the sum total of my own existence, what went before makes me who I am now!

[mentalboy]

[TaffyTDM]

So, got the casing off and indeed it did look rather gunky so sprayed out, dried and refitted.

However i now have a new symptom, during the ride to hove the tach and speedo needles were going mental for a few seconds, then reading correctly, then bouncing around again. It seemed to me this happened more likely on a downhill stretch (still under load).

Just stopped and whilst the engine is still firing fine on the button, the tachometer is going beserk again whilst stationary and at tick over.

Wut do!

[WD Forte]

Hmmm You SURE the sub frame aint bent?



Tachos going berserk is usually intermittent contacts or extraneous electrical noise
If both clocks are going ape shit, I'd be checking for a consistent supply and ground continuity
from the clocks back to frame/battery negative terminal

Opening checking and cleaning all electrical connectors on bikes should be at least an annual thing.
I just sorted a 2018 delivery scoot in this way
Owner was saying 'fookin rubbish wont buy another' until I pointed out 42000 miles in 2 years in all weathers was quite impressive
but it takes a toll and bike or scoot, the weather will get in eventually if you dont keep on top of it.
____________________
bikers smell of wee

[TaffyTDM]

Ive adjusted the chain and everything

Sometimes i wish the tdm would just go out in a big bang and leave me with a big enough bill to walk away without hesitation
Would be nice to treat myself but it keeps dripping me hurty problems that are just about worth it to keep it going. Kwak are doing 0% apr at the moment on the versys which is tempting, but i havent had anything on tick for years and dont like the idea of it any more. But how nice would it be to have a shiney new toy!

Well on the ride back (mix of dual carriage way and a flowy single A) no spazziness from the clocks, no issues starting and restarting a few times so who knows

Hopefully the contact cleaner did it, possibly not fully evaporated hence the mini melt down

[jeffyjeff]

[TaffyTDM]

Back to square one again started fine this morning, stopped for a coffee with MrsTdm, now nothing from the button, like im not even pressing it.

Of course i didnt bring the multimeter with me. And bumping is going to be a workout due to the way ive parked. Should have planned that one better!

[Skudd]

I'm trying to think of some advice that sounds good and technical, but I wouldn't do myself, have the knowledge to do or the equipment, but still look knowledgeable on the internet. Sadly I can't.

Here is a useful video

https://www.youtube.com/results?search_query=how+to+make+fried+rice+at+home
____________________
Famous last words of Humpty Dumpty. " Stop pushing me "
Petty Anarchists look at "1984".............. The Visionary looks at "Animal Farm".

[TaffyTDM]

Dropped bike off at garage. At home making egg fried rice

[TaffyTDM]

For the googlers of the future- fuel pump relay it would seem didnt like being warmed up any more

[mentalboy]

[pepperami]

[Pete.]