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  #41  
Old 1 Week Ago
dieseldude dieseldude is offline
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As most guys said - the new coil didn't change anything.
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  #42  
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dieseldude dieseldude is offline
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I've started looking at the wiring loom because when both my ride on mower and quad bike didn't run, it was due to electrical issues.

So, right near the head stem, I found a couple of broken wires. I'm not sure whether it's anything to do with performance mods like the 'grey wire' mod, but there is a cut/snapped black wire that looks like it might have once been joined to the yellow wires and also a green wire that looks to have separated from the green wire.

Any thoughts or any info from anyone who knows bike electrics?
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  #43  
Old 1 Week Ago
dieseldude dieseldude is offline
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And the other wire......
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  #44  
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Pygmygod Pygmygod is offline
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Download the manual mate. It's for free!

It shows you what each of those wires is for, you can then work out whether they are meant to be joined or whether they are cut for a reason.

http://www.yamahaownershandbook.com....H-28199-30.pdf
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  #45  
Old 1 Week Ago
dieseldude dieseldude is offline
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Quote:
Originally Posted by Pygmygod View Post
Download the manual mate. It's for free!

It shows you what each of those wires is for, you can then work out whether they are meant to be joined or whether they are cut for a reason.

http://www.yamahaownershandbook.com....H-28199-30.pdf
I've got a factory manual. I can't seem to find anything specific in the wiring diagram.

I've patched up the snapped / cut wires and tidied it all up. It seems like they're more to do with tail lights etc than the electrics of the bike running.

There is spark and the headlight illuminates as I kick it. I don't think these couple of damaged wires have anything to do with it.

Might try a compression gauge on the engine next. It's frustrating as hell!!!! Considering it's already been to a Yamaha dealer and a bike mechanic, I'd have assumed this sort of simple stuff would have been check already.
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  #46  
Old 1 Week Ago
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Tom68 Tom68 is offline
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Quote:
Originally Posted by dieseldude View Post
I've got a factory manual. I can't seem to find anything specific in the wiring diagram.

I've patched up the snapped / cut wires and tidied it all up. It seems like they're more to do with tail lights etc than the electrics of the bike running.

There is spark and the headlight illuminates as I kick it. I don't think these couple of damaged wires have anything to do with it.

Might try a compression gauge on the engine next. It's frustrating as hell!!!! Considering it's already been to a Yamaha dealer and a bike mechanic, I'd have assumed this sort of simple stuff would have been check already.
Leakdown test will give you a better idea of compression sealing, especially with auto decomp.
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  #47  
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peterp peterp is online now
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Dark Green is an indicator and the dark blue is the brake or tail lamp .
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  #48  
Old 6 Days Ago
dieseldude dieseldude is offline
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I'm not sure what exactly fixed the issue, but the last thing I changed was the wiring.

By repairing those cut/broken wires and tidying up the loom in general, it now runs perfectly.

I fixed that Saturday afternoon then kicked it again on Sunday and it started then idled perfectly. I loaded it up and ducked up to Glasshouse for 4 hours with a couple of mates and it didn't miss a beat.

Thanks for all of your input and eagerness to help me sort out the problem.

Sorry I can't definitively say what fixed it, but I guess it was a combination of cleaning out the carby and all jets within, resetting the accelerator pump, getting the air/fuel screw close enough and fixing the broken wires.

Cheers.
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