MZ won't start

[grog]

Forgot about the extra wire trick. That was what i did on 14  while back, extra earth to batt. Made a difference. Its on here somewhere. mjgt, maybe the way to go??

[gsxbarmy]

Forgot about the extra wire trick. That was what i did on 14  while back, extra earth to batt. Made a difference. Its on here somewhere. mjgt, maybe the way to go??

@grog https://gsx1400owners.org/forum/index.php?topic=4828.0

In the stickies, in electrics 

[Mick_J]

MZ thought of that and already has a separate earth from the starter to the battery, I've managed to blag a length of starter wire so I can connect the starter directly to a battery, when I get the time I'll try that.

[Mick_J]

Finally managed to get some leads and put them straight from the battery to the starter and it spun the engine over so I have got a shagged lead.  Anyone know of a place to get leads made up?

[Speedy1959]

I would phone an auto electrician..
I would be amazed if they cant fettle a lead..

[Eric GSX1400K3]

Tried cleaning them and spraying with silicone spray as per Grogs advice in the other thread?

[Hooli]

There's an ebay seller called Pudding (or something similar) who makes up fatter leads for Triumph Triples as they have hot start issues. He'd probably be able to do them if you can't find anywhere local.

[Mick_J]

Tried cleaning them and spraying with silicone spray as per Grogs advice in the other thread?

Thanks Eric, tried that, no difference.

There's an ebay seller called Pudding (or something similar) who makes up fatter leads for Triumph Triples as they have hot start issues. He'd probably be able to do them if you can't find anywhere local.

Thanks Hooli, I'll Have a Look.

[Mick_J]

Well I have four wires to the starter system, one form the battery live to the starter solenoid, one from the starter solenoid to the starter, one form the battery earth to the chassis and one from the starter motor to the chassis and they all check out fine.  With everything connected up and ignition off I can activate the solenoid and the engine turns over, reconnect the relay and use the ignition circuit and the motor will not turn the engine over.  So now I have to eliminate everything electrical to find out which bit is dragging the battery down.  I'm glad I've got other bikes so at least I can get out for a ride.

[Eric GSX1400K3]

What's the current rating of the relay Mick? Seems that's the limiting factor

[Mick_J]

The starter relay is fine, I have a spare and they both do exactly the same.

[steve porter]

A worn sprag can look OK but be worn enough to give those symptoms , very common with belt drive ducati's

[grog]

Mick, with your wires connected all is good.Rules out starter motor etc.  Next check trying to start with starter button. Really only two checks, while trying to start, voltage at main feed wire, voltage at solenoid wire. Must be a loss on one of them.

[Mick_J]

Steve, Sprag clutch is fine, already had a look and it looks as good as new and works perfectly.

Grog, Starter motor is fine, if I activate starter solenoid with the ignition off it turns the motor over no problem, if I switch ignition on and use starter button it will not turn engine over, something is dragging it down so it's a process of elimination now.

[Barbastro K6]

money and balls are for occasions... and this is one to spend taking it to a good electrician