Thanx for the replies guy's.

I was clutching at straw's with the TPS, but I was figuring there may be connection through the corrosion when cold but engine heat may increase resistance giveng a duff, if any reading. Thing's also seem worse in damp or wet condition's...
Of course I could be talking complete crap!!!

I've just been out for a good long(ish) ride, performance seemed to be consistent throughout the 1 3/4 hour blast.
Here's hoping.

BUT....

With performance now consistant over a period of time, the bike is noticably lacking in the 5 1/2 to 8000 rpm power band, poor acceleration and quieter engine note (Kapow above 8500 tho!).
As I've mentioned jetting is stock, For the power jets is it correct that the left (rear) cylinder run's the smaller -72 jet, while the front run's the larger 75 power jet?

Also the Needles are marked J3LC,

If I understand correctly there are three sizes of needles used, A, B and C. Size B being standard and (my) size C being thicker, hence leaner mid range = less power and tractability.

Is this correct, if so are B needles available and can they be used with the needle jet's currently fitted?

Hopefully I'm getting there....
Many Thanx,
Regard's Phil

PS The battery's new and charging system ok, I tried trickle charging and running with no light's, in case there was slight power drain causing the PGM to go Doollally (technical term).

Didn't make a scrap of difference!!!


'01 TRX 850
'93 NSR 250 MC21
'76 Honda 400/4