Sounds like a right stupid question but just replaced my dizzy as the advance mechanism on my OEM dizzy was not returning and the timing was all over the shop. The new dizzy (an Accuspark one) doesn't seem a whole lot better? If you turn the rotor arm, it does move round a bit against the spring (to provide the advance up to 32 deg) but when you let it go, it does not spring back straight away, more sort of moves back a little and then returns the rest of the way when it feels like it. the effect this has on the timing it to advance to 32 deg, then back to 15 deg within a second, then takes about 20 or so seconds to return back to the 7.5 DBTDC at 850 rpm. This can't be right surely? It's putting the tickover rpm right up - maybe this is because i'm not getting the timing right.
No! Are you setting up the timing right with the vac hose off? It souks advance more than 30 degrees with the hose on Cheers Ben
Running vac advance dizzy with timing set at at tickover rpm with vac hose off. Then put vac hose back on and timing will not go back from 32 DBTDC to 7.5 when I take the revs off. Is the new dizzy also knackered?
