Join Date: Dec 2008
Location: Port Macquarie, NSW, Australia
Speedo gremlin - any ideas
Just returned from an 8 day roadie, covering 3500kms and the following symptoms appeared while on the trip. They have appeared briefly before, some 5 years ago, but have been dormant until now...
1 When the engine fires up the speedo needle moves up to the 30kph [20mph] and then drops to zero.
2 After start up, if during the ride I run the revs up to 8000RPM the speedo needle issue disappears at the next start up.
3 If I don't use high revs, the issue remains on each start up.
4 On one occasion during the ride, and the next start following extensive C Control use, the starter would "click" but not start. With the ignition on, the headlight remained off, but indicators and horn all operated. It normally remains on until the starter button is hit and then comes on again when the starter disengages. Headlight is hard wired in NZ. Anyway, after a bit of head scratching the head light came on with the ignition, a prod of the starter and she fired up! No more CC on the trip, and she fired every time, although the speedo needle issue remained.
The engine has done 80000km [50000 miles] and the battery was replaced with a factory gel unit two years ago.
Last time this happened, [5 years ago] I had been riding in VERY VERY salt laden sea air. The problem eventually disappeared after a [recommended] good thrash to 8000 RPM. This time, I had been on a sea crossing by ferry, and being pretty rough, sea spray had coated all the bikes on board with a very liberal coating of salt water which was washed off the next day!
SO, could I have an earth problem somewhere, and if so, any ideas where to look.... It was suggested the main earth on the starter motor could be the culprit, but it's APITA to get to. Could I have a rectifier problem or simply a gel battery going bad? All advice and ideas greatly appreciated. Replies may be a little slow given time zone differences....and I live in a remote, but beautiful part of NZ and my favourite wrench lives a two day ride and a ferry crossing away!
BTW 5 years ago, nothing showed up on the diagnostic... Haven't had the battery checked out yet as I though I'd wait for suggestions, but it's is kept on a time controlled battery minder when not in use.
Thanks for your help
2002 K1200RS Owned from new. Pacific Blue, Ohlins. 183,000kmís
2016 K1300R Black, Remus hexacone. 6000kmís
The family history
1951 AJS 500 single - my Dads
1916 Triumph Type H, Western front, France WW1 - my Grandads