timimg belt
There's no adjustment...
There's a crank position sensor on the lower crank pulley - as far as I know it's not adjustable, a straight forward remove & replace - there's a cam position sensor on the back of the exhaust cam, which I believe is adjustable but does not have to be touched during a timing belt replacement.
timing
Might be a good idea to check that the timing sensor is properly fitted, then I would check if the belt is not a bit out of alignment. If the belt is not 100 % properly fitted (like 1/2 teeth out) then the timing would be out too. That could explain your problem...but it could be something else....
Hope you get it fixed
Happy io
My io is now SOLD Thankshttp://pajerio.com/forum/claudes-io-2002-zr-built-thread-onlyhappy-io