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Author Topic: another GT650 '08 not starting  (Read 1170 times)

yeders

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Re: another GT650 '08 not starting
« Reply #50 on: August 06, 2018, 03:33:47 PM »

OK
so the magneto coil checks out and is in the middle of the range in both of these:


I was able to access the top cylinder's ignition coil and tested both the primary and secondary coils.
these were within range.

I wasn't able to access the front cylinder - is there a trick to getting to it, or do i need to take the whole filter/intake box off?

anyway, i thought i'd check the spark plug....


when triggered outside of the bike, i get a spark.

what does everyone elses plugs look like? i guess this might mean that im getting incomplete combustion - is this due to all the attempts to turn over without it actually turning?

I am running a K&N air filter, would this make the fuel run too rich (as I dont think i rejetted between that and stock air filter)

thoughts?
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Sid

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Re: another GT650 '08 not starting
« Reply #51 on: August 06, 2018, 04:17:50 PM »

Was the plug wet, indicating fuel is getting in?
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2011 GV650

yeders

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Re: another GT650 '08 not starting
« Reply #52 on: August 06, 2018, 04:25:56 PM »

plug didn't look wet. the cylinder plug hole and exhaust smells like fuel
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spit051261

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Re: another GT650 '08 not starting
« Reply #53 on: August 06, 2018, 10:32:15 PM »

Sure you have to remove air filter to get at it and may as well while your at it. You can also check for air blockages which could stop it from firing .
Could try spraying starter fluid up the air intake.
If anything the K&N would cause lean running not rich
If your the other is sparking and you have air and fuel (is the fuel good?) that just leaves timing and compression me thinks.
Out of ideas after that.
« Last Edit: August 06, 2018, 11:00:42 PM by spit051261 »
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Sid

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Re: another GT650 '08 not starting
« Reply #54 on: August 06, 2018, 11:08:21 PM »

May be worth checking the pickup coil. If that's duff, the bike wont run.
I think it's meant to be 110-140 ohms?
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2011 GV650

spit051261

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Re: another GT650 '08 not starting
« Reply #55 on: August 06, 2018, 11:20:40 PM »

May be worth checking the pickup coil. If that's duff, the bike wont run.
I think it's meant to be 110-140 ohms?
Wouldn't bring a code up?
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2010  GT650R in the best colour RED

Sid

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Re: another GT650 '08 not starting
« Reply #56 on: August 06, 2018, 11:26:07 PM »

May be worth checking the pickup coil. If that's duff, the bike wont run.
I think it's meant to be 110-140 ohms?
Wouldn't bring a code up?

No idea buddy.
Depends on the tolerance in the control strategy I suppose.
Sometimes the thing has to be bloody miles out before a code comes up. However, sometimes a code is thrown when just a gnats cock out?

Anyways, I'm off to bed. Bloody time diff between us is annoying sometimes. 11.30 pm here now...
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2011 GV650

yeders

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Re: another GT650 '08 not starting
« Reply #57 on: August 07, 2018, 12:42:09 AM »

May be worth checking the pickup coil. If that's duff, the bike wont run.
I think it's meant to be 110-140 ohms?

hey Sid - do you mean the pickup coil in the magneto? I get 103 ohms there. range is 90-110.


Sure you have to remove air filter to get at it and may as well while your at it. You can also check for air blockages which could stop it from firing .
Could try spraying starter fluid up the air intake.
If anything the K&N would cause lean running not rich
If your the other is sparking and you have air and fuel (is the fuel good?) that just leaves timing and compression me thinks.
Out of ideas after that.

Okay - i'll get this done tonight and see how we go.
thanks for all your help thus far - i really appreciate it.
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Sid

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Re: another GT650 '08 not starting
« Reply #58 on: August 07, 2018, 06:10:52 PM »

Yeders,

I think the pickup coil should be 110-140 on the 650 - I think the range you gave was for the 250?
I'm not 100% sure on that, but worth checking mate.
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2011 GV650

umop-ǝpisdn

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Re: another GT650 '08 not starting
« Reply #59 on: August 07, 2018, 08:53:57 PM »

I was thinking that in all the confusion, that perhaps the connector for the crank trigger was plugged into the connector that powers the loom. i.e. there are two identical connectors, one for the trigger and the other that goes to the main fuse. The crank position sensor's wires are blue and green, they should connect to the loom via a connector that has a matching pair of blue and green wires, not to the main power connection that has a brown and black with white stripe wire.

It was just a thought. The connectors are exactly the same and it's really easy to cunfuse, especially when the wires all heat up and turn brown. The symptoms that you would experience match. i.e. crank, but no start.
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