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Old 15-02-19, 01:28 PM   #11
Craig380
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Join Date: May 2015
Posts: 612
Default Re: 650 twin spark - tough starting the morning after

Quote:
Originally Posted by embee View Post
I know my (old) Yaris can suffer from this if I start it when just part warm and stop it again, the next cold start can be a pig.
A lot of cars get this, especially those with hydraulic tappets. The tappets can pump up and keep the valves off their seats, so there's not very much compression when trying to restart. My old Mondeo did it.

It's called 'lawnmower syndrome' (people starting their cars so they can get the lawnmower out of the garage)
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Old 17-02-19, 04:48 PM   #12
aesmith
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Join Date: Mar 2013
Location: Aberdeenshire
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Default Re: 650 twin spark - tough starting the morning after

Cheers. I'm surprised that a couple of weeks out of use is long enough to require special handling before startup. My bike's normally used every weekday, but is out of use for a couple of weeks at a time when we're off work, or most recently because our track was impassible.

The plug fouling theory sounds plausible. I would have though over fueling would have dispersed overnight.

So the question is how warm is warm enough to avoid these issues? Typically it would arise for me if the bike needs to be moved from the shed to the garage and I can't face pushing it up the slope. Or running a few minutes to check the Scottoiler is working.

Hope the answer isn't "until the fan runs", I don't think I've ever got the bike that hot either in the shop or when riding.
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