84 1100 tack is twitchy

[tboy]

My 84 has been on the road for two years after a restoration.  It runs beautifully in my unpracticed eye;  plugs are pristine after the season, no temprament issues hot or cold weather,(Canada).  I love it.
Always sensitive to its well-being, I have just in the last month noticed the tach is twitching. A new condition. It progresses properly through an acceleration and reads properly, but once in a while the needle twitches up a few hundred rpm for half a second, then settles to its normal rate. It does this for a while, then doesn't do it forever during a ride. 
Thoughts?
tboy

[Pat Conlon]

The tach receives a signal from the coil. Sand clean the wire connection at the coil along with the coil grounds and see it that helps.

[fj11.5]

if what pat suggested dousnt fix the problem , try cleaning the contacts on the wires at the back of the gauge housing , , just extra work to get to though

[tboy]

Thanks to the responders.  First day on the site and I've got my money's worth.....   I will donate to site fer sure.

[fj11.5]

welcome mate , , and if your lucky our local power ranger monkey may send a present one day for donating 

[FJmonkey]

welcome mate , , and if your lucky our local power ranger monkey may send a present one day for donating 

http://www.fjowners.com/index.php?topic=6838.0 Read down the thread...

I have 5 of these gems for members that have donated in the last 6 months. You can make a donation now and qualify if you have not donated in the last 6 months. No profit for me, you get the tool for the cost of shipping. This club has done so much to improve my FJ enjoyment and Kookaloo that giving back is simply the right thing to do.