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February 12th, 2012, 07:31 AM   #1
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Hard Starting

Recently, I was experiencing a hard starting issue when my 2011 FE570S bike was cold. The bike is four months old, and it would start, but was turning over four or five time before catching, and would often catch when I let off of the start button. I read a number of posts here and was slightly concerned that this could be a serious problem associated with several things addressed on these forums.

I finally ran the battery dead one day trying to start the bike. After jump starting the bike with my KTM and recharging the battery, I decided to do a voltage check on the battery. My readings came up with 12.1 volts cold, 14.1 volts idling, and 8.0 volts under starting load. A 12 Volt battery in the Husaberg should never be below 12.4 volts cold or below 9.6 volts under starting load when fully charged. My battery had a dead cell obviously.

I immediately replaced the battery with a new battery which my dealer warrantied, and the hard starting issue is completely gone. The bike fires immediately and probably on the first revolution. I think the low voltage was not allowing either the ignition or the fuel injection to function properly under load and is probably why the bike would often fire as I let off of the starter button. I can't prove that, it is just my theory, but if you are having difficulty with your bike starting, you might want to check the battery voltage. A dead cell could be causing issues, and the bike will still turn over with as little as 8 volts being produced under load.
brian011952 is offline  
February 21st, 2012, 06:17 AM   #2
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Re: Hard Starting

My 570 made pretty weird cranking noises when I started it yesterday for the first time in 4 months without charging battery. Also had fuel pump completely dry because I changed new fuel filters in the tank. Only needed to crank it for 4-5 seconds to get it into life. Let it idle for few minutes and gave couple revs.

Now it starts immediately, actually alot better than when it was new. Still putting the lighter and better Shorai lithium battery in it.
maKe is offline  
February 21st, 2012, 09:33 AM   #3
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Re: Hard Starting

I have the Shorai on my 2010 390 and at one night at -15C it started at the first attempt (choke on).

Second morning, samen conditions, started first attempt again (choke on).

The Shorai with the Swedish bike is a good combination
Noppy is offline  

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