Club 80-90 Forums

Hi
Just replaced the vacuum advance on my '87 1.9 DG and slightly confused by the timing. I've read the WIKI but feeling a bit dense. I had to start somewhere so checked for true TDC to calibrate the pulley timing notch and then marked up + and - 5, 10 to 14 and 24 to 28degrees. With static set at 5deg (vac detached and plugged), the mechanical advance seems pretty good. When I reconnect the vac the advance heads up to c38 to 40deg @4200. Is this normal and should I aim to get the advance right with the vac advance connected?
Thanks
Nick

you do the timing with vacuum off, the carb is not zero pressure at idle, so you will experience a change in engine note as you reconnect the vacuum line, remember to block the vacuum hose to prevent air leak while timing, I find a golf tee just the job
the reported advance you are getting sounds bang on which it should be with new unit

Cheers Aidan, appreciated!

Nick