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post #1 of 23 (permalink) Old May 15th, 2019, 11:47 pm Thread Starter
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Hard starting - SOLVED

My multi has always been a sketchy starter - although it's never left me stranded. I had to put in a new battery this year and figured I should at least get a season of easy starts but NO, it was the same old crank-crank-crank-crank-crank-crank-crank-crank-crank-START. The other morning I had to push the button twice and do two crank cycles to get it going. During the second cranking cycle, I grabbed the throttle and gave it the slightest of twists and VOILA! Instant start. So for the past few mornings I've been just touching the gas as soon as I push the button and it starts pretty much INSTANTLY every time.

Anybody else seen this behaviour?

I'm wondering if maybe I did a TPS reset it might help? Or just get used to goosing the throttle during cranking? I am sure I killed my last battery before its' time by cranking for 30s at a time, then riding 7 minutes to work in traffic and shutting it off..

'09 Multistrada 1100s
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post #2 of 23 (permalink) Old May 16th, 2019, 3:49 am
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I'd start with a can of seafoam...might just be a dirty injector...adding throttle at startup is not really a solution...if that does nothing I would take a peak at the valves...check the timing... clearance...crud...

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post #3 of 23 (permalink) Old May 16th, 2019, 6:18 am
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Well, I see you marked your post SOLVED. Want to share?
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'10 MTS1200 S
'00 VTR1000f
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post #4 of 23 (permalink) Old May 16th, 2019, 10:56 am Thread Starter
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Quote:
Originally Posted by Buhgaboo View Post
I'd start with a can of seafoam...might just be a dirty injector...adding throttle at startup is not really a solution...if that does nothing I would take a peak at the valves...check the timing... clearance...crud...
Thanks, I'll try the seafoam and see what happens. I adjusted valves last winter so clearance shouldn't be an issue at 5K km but I'll check them again.

Not sure what I can do about valve timing - top end is stock AFAIK and belts are on the right teeth so... I don't have the angle gauge tool that bolts onto the end of the crankshaft to check the profile, I could probably make one pretty easily though. Ignition timing is electronic using crank position sensor and is not adjustable, yes?

If the valves are dirty like the ones in your picture what would cause that? I did do a compression check when I was overhauling the valves last year and it was fine (>140psi) so they are sealing. Bike runs like a top otherwise.

Because it starts the INSTANT I add a TINY amount of throttle I am just wondering if maybe it's just not getting enough fuel at fully closed throttle... yet once started it idles perfectly and has never stalled once running. Also it doesn't seem to matter if the bike is hot or cold, it never starts on the first crank like other bikes I've owned (when hot).

'09 Multistrada 1100s

Last edited by dspear99ca; May 16th, 2019 at 11:01 am.
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post #5 of 23 (permalink) Old May 16th, 2019, 11:05 am
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The source of that carbon is still on the table...I've tried many solutions...none worked... currently working on an intake temp theory...the valves aren't getting hot enough to burn clean...if I run it hard it won't start hot...but let's not get caught up in this


....are you running an aftermarket exhaust?...exhaust flap still connected?

If you did the valves yourself what was your target values for the open/closers?

If you just put the belts back on them your timing is going to be ever so slightly off...I have a good post in Ducatimonster forum under monster821 full service on how to set the timing with a readymade tool...but to check them you only have to roll the engine on it's Mark and see how the cams lineup



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post #6 of 23 (permalink) Old May 16th, 2019, 11:19 am Thread Starter
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My bike is the last 2V airhead year ('09) so only one cam per cyl. Exhaust is stock non-Termi, cat is still there.

Valve clearance targets were 0.15 openers 0 closers (but still spin when rocker arm spring compressed). Actuals on the openers ranged from 0.12 to 0.14 measured after install on cold engine.

'09 Multistrada 1100s
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post #7 of 23 (permalink) Old May 16th, 2019, 11:42 am
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Originally Posted by dspear99ca View Post
My bike is the last 2V airhead year ('09) so only one cam per cyl. Exhaust is stock non-Termi, cat is still there.



Valve clearance targets were 0.15 openers 0 closers (but still spin when rocker arm spring compressed). Actuals on the openers ranged from 0.12 to 0.14 measured after install on cold engine.
My bad on 4v info to 2v problem....your timing is probably on or more than close enough with those specs....I'm running an m821that would only ever start on the second attempt but it always did start on the second try...until it didn't...it's a long story...seafoam helped initially and it is a simple solution and great at cleaning the fuel deposits...I was under 5% loss for all of my leakdown tests and I still had issues starting on the first go...the valves being dirty ultimately was what my problem was...the initial shot of fuel was just getting absorbed in the crud...but in the end when it got dire I was also experiencing no chance hot starts...it smelled off...like unburnt fuel off and the exhaust would load up with carbon if cleaned in short order...this again is something I've been dealing with since it was new...58k miles on it now...when it does act up now...it was typically after a hot lap in the mountains near the redline...running it around town with some "one and done" helps stave off the tear down...but in the end a walnut blasting brings everything back to zero...if your able to get a peak at your intake valve...if it's soiled then voila...that be the cause...

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post #8 of 23 (permalink) Old May 16th, 2019, 3:05 pm Thread Starter
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That makes sense and would explain why some extra fuel would help. I will need to pull tank, airbox, throttle bodies... might be a fall project as long as it continues to start for me. I just picked up one of those tiny cameras on the end of a wire, maybe I can snake it in there somehow, if it was carbs there would be vacuum sync ports...
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'09 Multistrada 1100s
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post #9 of 23 (permalink) Old May 16th, 2019, 3:33 pm
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I used the same camera...not for the pics I posted...but rather than go through all the removal I pulled the air filter and ran a hand down there with the camera...deposits will be fairly evident....if they exist...I seem to be the only person on here having to deal with it...I'll loose an exhaust valve every 23k miles if nothing is done..if you ever get an obnoxiously loud engine note on engine braking it's time to run some techron through the system and blast the valves...this has been my experience...for all I know it's a loose coil wire...lol



Lastly...it's a bit rare but try starting the bike with the exhaust can removed ...if it starts right up the cat might be fouled .. something new to try anyway

Last edited by Buhgaboo; May 16th, 2019 at 3:38 pm.
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post #10 of 23 (permalink) Old May 16th, 2019, 4:12 pm
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Could it be a bad stepper motor?
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