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SV650 Gen1 (99-02) Tech Info, advice or questions specific to the 1999-2002 model SV650.

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Old 06-12-2019, 04:40 AM   #1
Taghato
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Troubles starting sometimes

Hey guys,

Here's the situation. I recently got a 2001 SV650s with aprox 52.000km on the clock and I absolutely love the bike. But, I'm having starting issues.

When the weather is good I can start the bike with no issue. But after washing it, it won't start. It seems that there's not enough power to fire up the starter. It sounds like a dead battery and I can see the digits on the odometer disappearing. When I jump start the bike, there's no issue and it runs fine.

I have left the bike out for two days in dry weather, it starts. Left it outside for two days with rain on the first day and dry weather on the second day, it starts on the third day. When it's raining hard, it won't start. When the night was moist, it won't start in the morning.

So I'm figuring it's either a weak battery that somehow doesn't hold up when conditions worsen, but that seems unlikely being able to start after everything is dry again. So the next bet would be either the sparkplug cables or the cable to the starter. I will try to get a waterspraythingy and see what happens if I spray the cables. But I'm open to other suggestions as well (maybe ignition or kill switch?). Thanks for the answers.
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Old 06-12-2019, 07:39 AM   #2
Jay V
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Re: Troubles starting sometimes

Start by testing the battery voltage.

It should be 12.7V or more before you hit the button and over 10V when cranking.

Check the terminal connections and grounds.

The 1st Gen Starter Relays tend to go bad and create resistance, so that would be something to look at if the other things check out.
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Old 06-12-2019, 08:13 AM   #3
Taghato
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Re: Troubles starting sometimes

Thanks. Will get my hands on a multimeter asap.
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Old 06-12-2019, 11:37 AM   #4
Skweeji
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Re: Troubles starting sometimes

I've had issues like this after a heavy wash on my bike--
make sure the spark plug wires are fully pressed down. Sometimes water can collect and it might be hard to get a proper spark. Seems like this might be somewhat relevant since you're issue seems to be water/weather induced.

Look at the spark plugs themselves to see their condition. A good wipe of the plugs and channel should do the trick.

Best of luck!
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Old 06-13-2019, 05:21 AM   #5
Straticus
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Re: Troubles starting sometimes

Also make sure the Drain holes in the Cylinder/Plug recess are clear and that the Plug caps are not corroded inside.When you get your Meter set it on the 20k ohm setting and test the plug caps.Stock from the Factory they should be 5k ohms.Anything above 8k ohms and I replace the.OEM ones are too expensive IMHO so I've replaced mine with NGK Racing straights.



The small rubber skirt is to replace the stock rubber grommet/Seal that wouldn't fit and the piece of Card is to stop my hand damaging the Rad fins and the Rad fins cutting my hand/s.Temporary held in place with some double-sided tape whilst I did the job and when I check my plugs.


To make access to my front plug easier I have removed the Horn bracket and fitted my horn to the Front left side of on SV which allows me to undo the three Rad bolts and move the Rad forward without the need to drain the Coolant.I could even do this at the side of the road if needed.




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Old 06-14-2019, 12:23 PM   #6
Taghato
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Re: Troubles starting sometimes

Here's the update. I measured the voltage directly after my daily 30km commute as I wanted to keep track of the voltage over time. It measured 11.71 Volts. So no wonder I'm getting crappy starts.

I have also ruled out the weather somewhat. I left the bike outside in the absolute pouring rain for a whole workday. Started without issue.

Then after that I had to jump start the bike two days in a row with dry weather. It started again this morning though.

I've replaced the battery, which is now reading 12.71 and 12.50 with the ignition on. Haven ridden the bike yet. Will try to keep track of the voltage levels over the next week to see if something else maybe going on as well...
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Old 06-14-2019, 02:45 PM   #7
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Re: Troubles starting sometimes

Quote:
Originally Posted by Taghato View Post
I've replaced the battery, which is now reading 12.71 and 12.50 with the ignition on. Haven ridden the bike yet. Will try to keep track of the voltage levels over the next week to see if something else maybe going on as well...
Hopefully that's it then.

The other easy check would be to read the voltage at idle (should be more than before starting, and around 13-something) and also at 5000 RPMS (which should be close to, but not much over 14V).

Exact numbers are here somewhere, or someone can chime in if I'm way off, but that gives you a basic indication that the battery is charging.

1st Gens are also know to have R/R issues, but that is usually results in over-charging.
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Old 06-14-2019, 03:46 PM   #8
Taghato
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Re: Troubles starting sometimes

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Originally Posted by Jay V View Post
Hopefully that's it then.

The other easy check would be to read the voltage at idle (should be more than before starting, and around 13-something) and also at 5000 RPMS (which should be close to, but not much over 14V).

Exact numbers are here somewhere, or someone can chime in if I'm way off, but that gives you a basic indication that the battery is charging.

1st Gens are also know to have R/R issues, but that is usually results in over-charging.
Thanks for the tips, will check that out tomorrow.
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Old 06-14-2019, 11:07 PM   #9
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Re: Troubles starting sometimes

Quote:
Originally Posted by Taghato View Post
...
I've replaced the battery, which is now reading 12.71 and 12.50 with the ignition on. Haven ridden the bike yet. Will try to keep track of the voltage levels over the next week to see if something else maybe going on as well...
Good chance it was just he battery. If the problem persists after new battery installation then could also be worn starter motor brushes. SV starter motor problems used to be rare but are getting more common as the SV ages.
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Old 06-16-2019, 12:53 PM   #10
Taghato
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Well so far so good. Starting much better now. Feels a lot easier to fire up too. Voltage seems to be well within range.
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