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TechTalk / Re: More electrical gremlins
« Last post by jack737 on May 05, 2021, 12:59:15 PM »
Bike runs  great now! But still no tach.  Opened it up but I donít see anything obvious wrong with it.
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TechTalk / Re: More electrical gremlins
« Last post by jack737 on May 04, 2021, 10:12:04 AM »
I think it was overflowing because the top wasnít seating on the gasket, seemed like the accelerator pump nozzle was sitting too high.  Anyway theyíre clean now and no leaks so Iíll put them back in.
Hopefully it runs better, then I have to figure out why the tach doesnít work.
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General Board / Re: Gremlin gooshed it radiator load.
« Last post by fret not on May 04, 2021, 02:13:47 AM »
Have you flushed your cooling system?  It is amazing the "stuff" that can accumulate in there.  You have an aluminum radiator, not brass, so selection of coolant can be important.  Coolants recommended for Japanese cars with aluminum blocks (and radiators) should be good.  Also be careful of the water used to dilute the coolant, as 'tap water' can have impurities that can precipitate out, which can build a sludge and restrict flow, which causes over heating.  Use distilled water. :police:
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TechTalk / Re: More electrical gremlins
« Last post by kevin g on May 03, 2021, 10:34:33 PM »
There is a really small idle jet at the bottom of one of the small bores.  It gets fuel at the bottom of the bowel and sends to the idle circuit.  Mine was plugged and I finally got it cleared with a steel guitar string.  Mine did not overflow fuel, the cylinder would not run at idle.
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TechTalk / Re: More electrical gremlins
« Last post by jack737 on May 03, 2021, 10:17:58 PM »
Tried the spare instrument cluster and that tachometer isn't working either, so I guess the issue is the TCI ? 
 The front carb looked like it was overflowing gas into the intake so took the carbs out.  Put them back in the ultrasonic cleaner,  I'm thinking there is a small hole in that passage at the bottom of the float bowl but I can't get a wire or any compressed air through it.
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TechTalk / Re: Rear tire Sidewall cracks
« Last post by kd47828 on May 03, 2021, 12:49:52 PM »
I put Bridgestone Battlax on both my Vision and my VfR and been very pleased with them.  Good in wet and dry.
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TechTalk / Re: More electrical gremlins
« Last post by jack737 on May 03, 2021, 10:10:55 AM »
Yes the yellow black wire is cut. I havenít checked the valve clearances because it looks like this bike has only 8900 kmís on it. Looks like it was crashed at some point which crushed the instrument cluster. But the broken speedometer came with it and it was reading 8900kmís. Of course that could be off anything so who knows. Probably been sitting for 15 to 20 years.  I could see a lot of crap around the exhaust valves so Iím thinking they arenít sealing very well.  But trying to avoid taking the engine apart.  My compression tester doesnít fit this plug size so Iíll have to make an adapter. Maybe do a leak down check.
Iím getting spark at both cylinders, the tach assembly came off another bike so not sure if it works, I have a second one so Iíll try that one next.
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TechTalk / Re: More electrical gremlins
« Last post by WGuaire on May 03, 2021, 09:56:00 AM »
So now for my usual nag, have you disconnected the rev limiter? It's the y/b wire at the TCI and when it fails it cuts the spark to the front cylinder. It has been a long time since mine failed and I can't remember if the tach still worked.

I made a note of this and put this post on my storage hard drive. It's one less potential crap out. Plus, I don't exactly drive with the revs bouncing off the limiter anyway.
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TechTalk / Re: More electrical gremlins
« Last post by Walt_M. on May 03, 2021, 07:00:32 AM »
So now for my usual nag, have you disconnected the rev limiter? It's the y/b wire at the TCI and when it fails it cuts the spark to the front cylinder. It has been a long time since mine failed and I can't remember if the tach still worked.
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TechTalk / Re: More electrical gremlins
« Last post by Prophet Of Doom on May 03, 2021, 05:56:29 AM »
Got it to run but won't idle. I think carbs will be coming out again but would be nice to do a compression test as well.   Tach is not working at all.
Tach runs by counting pulses on front cyl, so if your tach isn't working, check your front cyl for spark before spending all that time on carbs. 
Of course your tach could be disconnected or broken - but it's a sign.
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