I'd been wondering where my 3 way joint was...Do you know where I could most quickly source one? Are the dimensions of the joint and the bore of the pipes used critical? If not i may be able to lash something up for the time being, as i'm keen to get everytrhing as close to stock as possible befor I strat ripping the motor apart to try to find why the damn thing vibrates so much. I think I have the powerjet plumbing amost back to stock. see below:
Any corrections welcome...
The hose marked with Yellow was missing when i got it. I've put the new piece in and joined it up with the Y piece as shown on the airbox lid, but I was less confident of the routing for the 3 way bit, but I think you have cleared that one up for me.
I started it up again last night without the airbox in place but it is still very vibey and has a very erratic 'tickover' - start up and it'll run fairly cleanly at about 1300rpm now that I've sorted and matched up the air screws, but blip the throttle and it may only settle back to 3500rpm or so. Blip angain and it may settle the back to 1300 - or not depending on how it feels
The throttle slips while not returning quickly enough for my liking ar not sticking open or anything so i'm thinking probably air leak somwhere. It aklso spits back a bit through the carbs and has a very sharp (almost 'clattery') engine note. It's not like big ends or anything - it just sounds 'wrong' Are they prone to losing bits of piston skirt or anything like that? I'll prob pull the reed cages out and the pipes off to see if it's more visible then before I pull the cylinders to check.
Thanks for the help, fella's. I'll keep at it.
Wb