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Old 07-09-2018, 01:37 PM   #1
kanikavi
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2nd generation SV650 starting troubles

I have an inactive SV650 which is having starting troubles. Last time I started it was few months ago, late last year. I am unable to start the bike, it cranks but does not start . Here is what I have tried so far -

1. I can hear the starter click and crank seems to be pretty smooth.

2. Few months old battery, the bike started with this battery last time, though I just rode few miles with it. I have recharged it since and charger shows completely charged.

3. The fuel was old, and tank has fine metallic deposits (due to ethanol ?) I cleaned it up as much as I could. I pumped out the old fuel and added fresh one.

4. I have verified that there are no dealer mode error codes.

I am not sure what to try next, any pointers would be much appreciated.


Thanks

Last edited by kanikavi; 07-09-2018 at 01:38 PM..
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Old 07-09-2018, 01:46 PM   #2
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How long have you been cranking it?
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Old 07-09-2018, 01:50 PM   #3
kanikavi
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How long have you been cranking it?
Few times over the course of last week. I had to recharge the battery and am keeping it on maintenance mode on charge.
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Old 07-09-2018, 02:17 PM   #4
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What vintage SV650?

Quote:
Originally Posted by kanikavi View Post
1. I can hear the starter click and crank seems to be pretty smooth.
If 2003+Gen2 EFI vintage; after you turn the key-on do you hear the fuel pump whirring sound for 1-2 seconds while it pressurizes the fuel system?
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Old 07-09-2018, 02:18 PM   #5
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Spark, fuel, and compression, with sufficient cranking that's all you need. You'll have to determine which one is missing.
Pull a plug if you have to. See if its sparking and if there is any fuel getting to each.
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Old 07-09-2018, 02:32 PM   #6
kanikavi
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Originally Posted by mototireguy View Post
What vintage SV650?



If 2003+Gen2 EFI vintage; after you turn the key-on do you hear the fuel pump whirring sound for 1-2 seconds while it pressurizes the fuel system?
Yes, when I turn the key, I can hear the whirring sound. I also hear a slight click near battery which I assume is the starter.

Last edited by kanikavi; 07-09-2018 at 02:36 PM..
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Old 07-09-2018, 02:33 PM   #7
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Spark, fuel, and compression, with sufficient cranking that's all you need. You'll have to determine which one is missing.
Pull a plug if you have to. See if its sparking and if there is any fuel getting to each.
How do I verify if the fuel is getting to spark plug ?
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Old 07-09-2018, 02:57 PM   #8
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How do I verify if the fuel is getting to spark plug ?
Crank it and then immediately pull the plug. Its should be wet.
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Old 07-09-2018, 08:19 PM   #9
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Any chance you have a power commander? They're really picky about battery voltage- and your battery voltage drops when cranking and for older batteries it drops too much. Starter will crank, but you effectively get no spark because the PC turns off. I forget the cut off voltage, but it's something stupid like 11V. Anyways, if you have a PC, make sure the little light is on when you're hitting the starter.
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Old 07-10-2018, 01:33 PM   #10
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Any chance you have a power commander? They're really picky about battery voltage- and your battery voltage drops when cranking and for older batteries it drops too much. Starter will crank, but you effectively get no spark because the PC turns off. I forget the cut off voltage, but it's something stupid like 11V. Anyways, if you have a PC, make sure the little light is on when you're hitting the starter.
The light is on.
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Old 07-10-2018, 01:34 PM   #11
kanikavi
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Crank it and then immediately pull the plug. Its should be wet.
I will try it today evening.
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Old 07-11-2018, 06:47 PM   #12
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I checked the spark plugs, they didn't look very good, so I changed them. I don't think they are wet after cranking though it takes a while to remove them, so not sure.

It looks more likely Fuel pump related, I will try the Fuel volume test.Will have to remove the air filter box to disconnect the fuel output line ? Also the connectors seem not so easy to disconnect.
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Old 07-11-2018, 07:24 PM   #13
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Fuel pump failures are extremely rare; you're more likely to need complete engine-replacement due to worn out crank than need new fuel-pump. Also more likely to have crank-sensor problems, bad crank-sensor wiring, fuel-line issues, fuel-filter, fuel-pressure-regulator, clogged injectors, bad injector wiring, problem with power to injector, ECU problems, etc. than fuel-pump. So replace all those first before even looking at pump.

Even IF light is on PC when cranking, it's no guarantee that unit is actually working correctly. Aside from complete failure, they also get map corruptions and you end up with non-usable fuel & ignition values.

Several posts this month already with removing PC resolving all issues. I had this exact problem with my CBR, and removing the PC fixed starting issues completely. From now on, I'm going with complete replacement standalone EFI system (Microsquirt) rather than any piggyback on top of factory ECU.

Last edited by DannoXYZ; 07-11-2018 at 07:25 PM..
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Old 07-11-2018, 08:21 PM   #14
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Removing PC did not help, I forgot to mentioned earlier. Cleaning fuel filter would be the next bet.
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Old 07-11-2018, 08:58 PM   #15
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Originally Posted by kanikavi View Post
Removing PC did not help, I forgot to mentioned earlier. Cleaning fuel filter would be the next bet.
Fuel filter is a safe bet given your earlier comment "fine metallic deposits" Where would that possible come from? I seriously doubt from any gas station. How did you discover or see them in a deep dark fuel tank?
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