I had a big problem with engine whine, 2 or 3 times I was out and about and the whining was there.
But not always... was very strange.

Then I left her at home and rode the damn bike the way I wanted to and the whining stopped.

 

Yeah but I don't know how to link them

 

As for the balancer adjustment, I'm petty sure that in the Haynes manual, it says to do it with the bike cold. If done when warm, the adjustment will be too tight when starting the bike from cold.

Here's a link in the 'How Too' section.https://cbrforum.com/forum/how-tos-8...stment-107818/

Strangely, I had exactly the same spark plug experience the first time I serviced my bike shortly after buying it. I think maybe they can work loose if they haven't been tightened properly? Don't over tighten them though!

Glad your problem seems to be resolved, but you might want to try the balancer adjustment again when cold.

 

Will do.

 

I tightened all my spark plugs and the wandering inaccurate rev counter stopped wandering and became accurate.

For 18 miles.

I got on the bike to come home tonight and at idle the engine felt like 1200 rpm but the rev counter showed 1600 - 1800 rpm (after the engine was warm), it read too high in every gear and wandered up and down.

I checked the spark plugs again but they're not loose and the engine sounds as if it's firing on all four.

Guess I'll have to check for shorts, bad connections, etc, but I was wondering, could it be the CDI unit?

Thanks all

 

Doubt it's the CDI - I'd say a chafed wire somewhere. I'd start at the harness plugs
at the instrument panel under the nose cowl - I'm thinking one connector is
corroded, loose or something

Some rainy day take the fairings off and start going through the harness from the
clocks on back but I really think the issue is up at the harness connection plugs at
the clocks tho'

 

I was just reading through this thread and seeing what has already been said.

The tach is the electronic type. It is actually counting the number of sparks it sees/time frame. If you have poor plug wires that are arching, the tach may be counting false sparks. Arching can happen more often in wet conditions.

If a plug is not in all the way and making a good ground, an adjacent plug wire may choose to send the spark to a touching wire and to its plug. In a certain time frame the tach would count more sparks then in a non-arching condition and give a high rev count.

The spark signal from the ignition control module goes to the coils and to the tach. If those wires are shorting, false reading will be seen.