Hello all I started this conversion last year and finally fitted it a month ago ,I am running the following jets
MJ 158 , PJ 40 ,1.5 turns out of pilot screw
EKR needle on slot 4
I have made an adaptor for both the filter side and the cylinder head flange which I have made air tight using o rings.
The bike started better than it ever did with the dellorto second kick from being newly fitted and ran like a dream ,really smooth tick over ,until I pushed the choke in ,it worked like a switch and the motor cut out at once ,when revved harder it will just about keep running but seems to be running very weak , I don't think that I have an air leak between the head and carb as I had the same problem using a straight adaptor fitted inside the original Yamaha WR 400 rubber stub.
Any ideas it really did run so well on choke I am loathed to return to the Dellorto
Cheers Puggy
MJ 158 , PJ 40 ,1.5 turns out of pilot screw
EKR needle on slot 4
I have made an adaptor for both the filter side and the cylinder head flange which I have made air tight using o rings.
The bike started better than it ever did with the dellorto second kick from being newly fitted and ran like a dream ,really smooth tick over ,until I pushed the choke in ,it worked like a switch and the motor cut out at once ,when revved harder it will just about keep running but seems to be running very weak , I don't think that I have an air leak between the head and carb as I had the same problem using a straight adaptor fitted inside the original Yamaha WR 400 rubber stub.
Any ideas it really did run so well on choke I am loathed to return to the Dellorto
Cheers Puggy
