Gas Tank Electric Engine Noise + battery draining - Kawasaki Z1000 Forum: Kawasaki Z1000 Motorcycle Forums
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post #1 of 5 Old 12-22-2019, 05:52 AM Thread Starter
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Gas Tank Electric Engine Noise + battery draining

Hi all - been having this weird issue with new battery 🔋 total drainage.

I have however noticed this high pitch quiet servo engine like noise coming from the GAS TANK - after turning my engine offf (sometime it only appears after a few hours - and caused by what seems to be GAS FUMES / pressure ).

After I open the Gas tank cover and let the fumes out - the engine noise stops (not to be confused with the fuel injection electric motor noise you hear when turning the switch on ).

I forgot to mention that I ride a Z1000 2007 .

Is there indeed an electric engine (servo like) Mechanism that starts once there is a gs tank pressure to eliminate it - and may be causing the battery to drain ?

Cheers,
Steven
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post #2 of 5 Old 12-23-2019, 03:55 PM
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These don't sound related to me.


Aside from that, I'm sorry to say that I don't have any specific suggestions. I'd probably pull fuses one at a time, replacing the fuse with a multimeter set in current(amps) measure mode while the bike is off to narrow down which system is drawing power.


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post #3 of 5 Old 12-26-2019, 01:39 PM
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The sound is the fuel tank vent. Check to see if it's blocked. To the best of my knowledge, there is no purge motor in there.
Start by getting a multi meter and checking for parasitic draw on each fuse with the key off.


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post #4 of 5 Old 12-27-2019, 03:40 AM
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Originally Posted by Vangelis901 View Post
Hi all - been having this weird issue with new battery 🔋 total drainage.

I have however noticed this high pitch quiet servo engine like noise coming from the GAS TANK - after turning my engine offf (sometime it only appears after a few hours - and caused by what seems to be GAS FUMES / pressure ).

After I open the Gas tank cover and let the fumes out - the engine noise stops (not to be confused with the fuel injection electric motor noise you hear when turning the switch on ).

I forgot to mention that I ride a Z1000 2007 .

Is there indeed an electric engine (servo like) Mechanism that starts once there is a gs tank pressure to eliminate it - and may be causing the battery to drain ?

Cheers,
Steven
I've had this problem since day one on my 2012 Z1000. I replaced a fuel pump after a couple of years because it failed.I wondered about the stress of all that pressure and noise on the pump. Nothing to see re venting when fitting the new pump. It's a pri** of a thing. I placate mine by keeping a thin coat of axle grease on the petrol filler seal. It lets the pressure slowly sync I think. It's a work around that seems to work most of the time. Maybe all of the time. Never seen the problem in any other bike i've had. PS I did not have the battery drain problem.
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post #5 of 5 Old 12-27-2019, 05:08 AM Thread Starter
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Thanks guys for all the input 🍷
I shall try the grease tip - and once the rain stops - will start dealing with a multimeter tracking where the potential drain is coming from.

Cheers - and safe travels.
S
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