https://photos.smugmug.com/Motorcycles/n-8gc5dS/1989HondaNSR250R/i-GBNrmDg/0/NH7x34t3mhdMswMDjXKmb7hPD8GS56GTc9k3mhcmW/1280/IMG_3106-1280.mp4
The power valve servo just arrived at T2 Racing in Osaka on Friday (23rd May) because it doesn't seem to be working as it should.
This movement in the video link below is when it's up at 10,000 rpm (been thru many heat cycles now) and it doesn't move
AT ALL as described in the tuning section here "With the kill switch set to the run position, turn the ignition on with the key/card. A
llow the Valve to cycle to the start setting. Now switch the ignition back off with the key/card.
Unplug the throttle position sensor (T.P.S), located on the inside of the right frame rail under the air solenoid block,
and switch the ignition back on. The servo will rotate to the "hi" open position.
Once again, turn the ignition off. Adjust the cables at the pulley end so the pointer aligns
with the mark on the back plate as shown in the diagram below.
**Note I tried to get it working with both the easy derestriction (disconnect the black/blue wire) or stock with it connected. (https://www.nsr-world.com/tuning/250-tuning/ignition/
I also ran the tests recommended in the workshop manual which involved a couple of wires with crocodile clips connecting to the battery terminals and certain tabs in the connector block but the servo wasn't interested in even pretending to respond.
https://photos.smugmug.com/Motorcycles/n-8gc5dS/1989HondaNSR250R/i-LNzsmPm/0/M9NSPM8fcHtGbV6gxRWrxrpkQ6Hx2TJXzm3WJQzW8/1280/IMG_3108%202-1280.mp4
Hopefully the servo will come back in a few weeks- (T2 said to expect two) it will come back fully functioning....as you know if it's not the servo, it could either be the Throttle Position Sensor (I looked around for a used one but there doesn't seem to be any available) OR of course...it could be the dreaded PGM.
T2 racing said they know someone who can fix the PGM's but there is a two year waiting list! I hope there's something lost it translation there....it might just be two months!...
in fact here's exactly what Yukako Hanakawa said
"I am not saying that I don't accept PGM2 refresh, but I don't do it at my shop, it is done by a specialized company.
However, the specialized company is busy, so I don't know the delivery time.
You have to wait about 1 to 2 years after receiving it. S
o I don't recommend it and I only accept it if you agree with the delivery time."
The PGM earlier this month, resting to give either immense joy or frustration.
and yes it's a PGMCDI not a 2.
