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Message started by marekbuk on 07/27/17 at 12:44:41

Title: Starter motor voltage
Post by marekbuk on 07/27/17 at 12:44:41

guys - anyone with an idea why that when I switch on the ignition and before pressing the starter button I measure 5.5v at the starter terminal
? - jumping to 12.5 v when the starter button is pressed.

Title: Re: Starter motor voltage
Post by Gary_in_NJ on 07/27/17 at 13:41:54

A slightly fried starter solenoid. Not fried enough that it has stopped to function, but fried enough that it has a voltage leak. If you disconnect the signal (ground or switch side) does the voltage leak go away?

Title: Re: Starter motor voltage
Post by verslagen1 on 07/27/17 at 14:31:24

Dirty lead?

check your ground.

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/27/17 at 14:33:00

Exactly where are you measuring?

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 00:55:21

I'm measuring at the terminal post on the starter motor

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 02:21:17

Gary! - I just disconnected the switch and ground side and still get the leak when switching on the ignition - puzzling as there is no other connection to the solenoid

Title: Re: Starter motor voltage
Post by Gary_in_NJ on 07/28/17 at 04:50:58

You could try disconnecting the negative battery cable and then reconnect it to see if it clears the problem. But even if it does it will probably return after one starting cycle. Is there a drain on the battery?

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/28/17 at 07:12:10

Don't sweat the momentary spike. Get the other issues figured out.
The battery is not right.
Is it lead acid?
Checked the water?
Had it tested?
Start with the battery
Then see

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 10:08:06

Gary - disconnected the battery and charged it - no change

Justin - it's got a posh Li-Lon lightweight battery fitted - it's even got a test button on it with x3 blue led's showing state of the battery - fitted by previous owner when he 'chopped' the bike

I've disconnected all the loom connections, cleaned and refitted with no change

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/28/17 at 10:20:35

Posh gets a warranty.
Because even Posh can fail.
Start with proving the battery.

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 10:25:26

Bike starts fine on the battery - I've cleaned the terminals - it's just annoying that there seems to be a leak to the solenoid when the ignition is switched on

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/28/17 at 11:00:48

Is it a Transient Reading or does it stay at five volts until you hit the button?

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 11:41:44

It stays steady at 5.5v

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/28/17 at 11:45:57

7E72617678716678130 wrote:

I'm measuring at the terminal post on the starter motor

Is it still there after it's started?

Title: Re: Starter motor voltage
Post by marekbuk on 07/28/17 at 11:57:08

That's something to check tomorrow- will post result

Title: Re: Starter motor voltage
Post by justin_o_guy2 on 07/28/17 at 12:39:20

If it's there you could pull the wire and check battery voltage, rev it, see what happens. And or check current between the wire and terminal. See what current draw is happening,,

Stand it up every few minutes and let it get oil on the cam.

Title: Re: Starter motor voltage
Post by marekbuk on 07/29/17 at 05:02:04

I can't believe It - tested this morning and no leaking voltage

Mystery unsolved